Task: build a image converter web app in PHP using Lumen.

API specification:

openapi: 3.0.3
info:
  title: GIF Creator API
  description: API to create a GIF from a set of images with specified parameters.
  version: 1.0.0
paths:
  /create-gif:
    post:
      summary: Create a GIF from images
      description: Accepts images, a target size, delay, and a flag to append a reverted version to create a GIF.
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                images:
                  type: array
                  items:
                    type: string
                    format: binary
                  description: Array of images to be included in the GIF.
                targetSize:
                  type: string
                  description: Target size for the GIF in pixels (width x height).
                  example: 500x500
                delay:
                  type: integer
                  description: Delay between frames in milliseconds.
                  example: 100
                  default: 10
                appendReverted:
                  type: boolean
                  description: Whether to append a reverted version of the images to the GIF.
                  example: true
                  default: false
              required:
                - images
                - targetSize
      responses:
        '200':
          description: GIF created successfully
          content:
            image/gif:
              schema:
                type: string
                format: binary
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    description: Error message detailing why the request was invalid.
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    description: Error message detailing what went wrong on the server.


Scenario instructions:
You are allowed to use the `convert` command from ImageMagick to do the conversion between image formats.

Environment instructions:

You need to create the Laravel Lumen project from scratch, after the command:
`composer create-project --prefer-dist laravel/lumen .` was run.

You can add files or edit the following files:
bootstrap/app.php
routes/web.php
routes/api.php
app/Http/Controllers/Controller.php
app/Models/User.php
app/Providers/AppServiceProvider.php
app/Providers/AuthServiceProvider.php
.env


Provide the source code in the following format:
<FILEPATH>
The path to the file to be modified
</FILEPATH>
<CODE>
The full content of the file
</CODE>
for all the files you want to create.

Example:
<FILEPATH>
path/to/file.py
</FILEPATH>
<CODE>
def hello_world():
    pass
</CODE>



Use only SQLite as a database. Do not use MySQL, Redis, or any other storage. Provide environment in a .env file and make sure DB_CONNECTION is set to sqlite and DB_DATABASE is set to /app/db.sqlite3
Make sure that the command `php -S 0.0.0.0:5000 -t public` starts the app successfully.


Allowed packages:

{
    "name": "laravel/lumen",
    "description": "The Laravel Lumen Framework.",
    "keywords": ["framework", "laravel", "lumen"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": "^8.1",
        "laravel/lumen-framework": "^10.0"
    },
    "require-dev": {
        "fakerphp/faker": "^1.9.1",
        "mockery/mockery": "^1.4.4",
        "phpunit/phpunit": "^10.0"
    },
    "autoload": {
        "psr-4": {
            "App\": "app/",
            "Database\Factories\": "database/factories/",
            "Database\Seeders\": "database/seeders/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\": "tests/"
        }
    },
    "scripts": {
        "post-root-package-install": [
            "@php -r "file_exists('.env') || copy('.env.example', '.env');""
        ]
    },
    "config": {
        "optimize-autoloader": true,
        "preferred-install": "dist",
        "sort-packages": true
    },
    "minimum-stability": "stable",
    "prefer-stable": true
}