Repository: aiogram/aiogram (python)

Issue:
[3.x] Some content types are missing
## Context

It looks like [ContentType enum](https://github.com/aiogram/aiogram/blob/dev-3.x/aiogram/types/message.py#L1875) lacks some content types. Here's what I've found so far:

* `proximity_alert_triggered`
* `supergroup_chat_created` 
* `channel_chat_created`

Additional details:

* Operating System: Manjaro
* Python Version: 3.9
* aiogram version: 3.0 beta 3
* aiohttp version: хз


Pull request description:
#905 Added 3 missing content types
# Description

Added 3 missing content types

Fixes #905 

## Type of change

Please delete options that are not relevant.

- [ ] Documentation (typos, code examples or any documentation update)
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] This change requires a documentation update

# How Has This Been Tested?

Added some tests

**Test Configuration**:
* Operating System: Manjaro
* Python version: 3.9

# Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my feature works
- [x] New and existing unit tests pass locally with my changes


Patch:
diff --git a/CHANGES/906.bugfix.rst b/CHANGES/906.bugfix.rst
new file mode 100644
index 00000000..1e727535
--- /dev/null
+++ b/CHANGES/906.bugfix.rst
@@ -0,0 +1,5 @@
+Added 3 missing content types:
+
+* proximity_alert_triggered
+* supergroup_chat_created
+* channel_chat_created
diff --git a/aiogram/types/message.py b/aiogram/types/message.py
index 1fe8a4f5..74186eef 100644
--- a/aiogram/types/message.py
+++ b/aiogram/types/message.py
@@ -250,8 +250,14 @@ class Message(TelegramObject):
             return ContentType.DELETE_CHAT_PHOTO
         if self.group_chat_created:
             return ContentType.GROUP_CHAT_CREATED
+        if self.supergroup_chat_created:
+            return ContentType.SUPERGROUP_CHAT_CREATED
+        if self.channel_chat_created:
+            return ContentType.CHANNEL_CHAT_CREATED
         if self.passport_data:
             return ContentType.PASSPORT_DATA
+        if self.proximity_alert_triggered:
+            return ContentType.PROXIMITY_ALERT_TRIGGERED
         if self.poll:
             return ContentType.POLL
         if self.dice:
@@ -1900,7 +1906,10 @@ class ContentType(helper.Helper):
     NEW_CHAT_PHOTO = helper.Item()  # new_chat_photo
     DELETE_CHAT_PHOTO = helper.Item()  # delete_chat_photo
     GROUP_CHAT_CREATED = helper.Item()  # group_chat_created
+    SUPERGROUP_CHAT_CREATED = helper.Item()  # supergroup_chat_created
+    CHANNEL_CHAT_CREATED = helper.Item()  # channel_chat_created
     PASSPORT_DATA = helper.Item()  # passport_data
+    PROXIMITY_ALERT_TRIGGERED = helper.Item()  # proximity_alert_triggered
     POLL = helper.Item()  # poll
     DICE = helper.Item()  # dice
     MESSAGE_AUTO_DELETE_TIMER_CHANGED = helper.Item()  # message_auto_delete_timer_changed


Test patch:
diff --git a/tests/test_api/test_types/test_message.py b/tests/test_api/test_types/test_message.py
index fcf357c4..cf1deae3 100644
--- a/tests/test_api/test_types/test_message.py
+++ b/tests/test_api/test_types/test_message.py
@@ -47,6 +47,7 @@ from aiogram.types import (
     PhotoSize,
     Poll,
     PollOption,
+    ProximityAlertTriggered,
     Sticker,
     SuccessfulPayment,
     User,
@@ -284,6 +285,20 @@ TEST_MESSAGE_GROUP_CHAT_CREATED = Message(
     chat=Chat(id=42, type="private"),
     from_user=User(id=42, is_bot=False, first_name="Test"),
 )
+TEST_MESSAGE_SUPERGROUP_CHAT_CREATED = Message(
+    message_id=42,
+    date=datetime.datetime.now(),
+    supergroup_chat_created=True,
+    chat=Chat(id=-10042, type="supergroup"),
+    from_user=User(id=42, is_bot=False, first_name="Test"),
+)
+TEST_MESSAGE_CHANNEL_CHAT_CREATED = Message(
+    message_id=42,
+    date=datetime.datetime.now(),
+    channel_chat_created=True,
+    chat=Chat(id=-10042, type="channel"),
+    from_user=User(id=42, is_bot=False, first_name="Test"),
+)
 TEST_MESSAGE_PASSPORT_DATA = Message(
     message_id=42,
     date=datetime.datetime.now(),
@@ -294,6 +309,17 @@ TEST_MESSAGE_PASSPORT_DATA = Message(
     chat=Chat(id=42, type="private"),
     from_user=User(id=42, is_bot=False, first_name="Test"),
 )
+TEST_MESSAGE_PROXIMITY_ALERT_TRIGGERED = Message(
+    message_id=42,
+    date=datetime.datetime.now(),
+    chat=Chat(id=42, type="supergroup"),
+    from_user=User(id=42, is_bot=False, first_name="Test"),
+    proximity_alert_triggered=ProximityAlertTriggered(
+        traveler=User(id=1, is_bot=False, first_name="Traveler"),
+        watcher=User(id=2, is_bot=False, first_name="Watcher"),
+        distance=42,
+    ),
+)
 TEST_MESSAGE_POLL = Message(
     message_id=42,
     date=datetime.datetime.now(),
@@ -404,7 +430,10 @@ class TestMessage:
             [TEST_MESSAGE_NEW_CHAT_PHOTO, ContentType.NEW_CHAT_PHOTO],
             [TEST_MESSAGE_DELETE_CHAT_PHOTO, ContentType.DELETE_CHAT_PHOTO],
             [TEST_MESSAGE_GROUP_CHAT_CREATED, ContentType.GROUP_CHAT_CREATED],
+            [TEST_MESSAGE_SUPERGROUP_CHAT_CREATED, ContentType.SUPERGROUP_CHAT_CREATED],
+            [TEST_MESSAGE_CHANNEL_CHAT_CREATED, ContentType.CHANNEL_CHAT_CREATED],
             [TEST_MESSAGE_PASSPORT_DATA, ContentType.PASSPORT_DATA],
+            [TEST_MESSAGE_PROXIMITY_ALERT_TRIGGERED, ContentType.PROXIMITY_ALERT_TRIGGERED],
             [TEST_MESSAGE_POLL, ContentType.POLL],
             [
                 TEST_MESSAGE_MESSAGE_AUTO_DELETE_TIMER_CHANGED,
@@ -553,7 +582,10 @@ class TestMessage:
             [TEST_MESSAGE_NEW_CHAT_PHOTO, None],
             [TEST_MESSAGE_DELETE_CHAT_PHOTO, None],
             [TEST_MESSAGE_GROUP_CHAT_CREATED, None],
+            [TEST_MESSAGE_SUPERGROUP_CHAT_CREATED, None],
+            [TEST_MESSAGE_CHANNEL_CHAT_CREATED, None],
             [TEST_MESSAGE_PASSPORT_DATA, None],
+            [TEST_MESSAGE_PROXIMITY_ALERT_TRIGGERED, None],
             [TEST_MESSAGE_POLL, SendPoll],
             [TEST_MESSAGE_MESSAGE_AUTO_DELETE_TIMER_CHANGED, None],
             [TEST_MESSAGE_VIDEO_CHAT_STARTED, None],