[de] Add english text as comment in chapter 1

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add translation for new note for windows user in chapter 1.4
[de] Add english text as comment in chapter 2

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 3

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 4

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 5

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 6

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 7

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 8

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Add english text as comment in chapter 9

- English text is from commit 23b06a3bbabe6bd37bc6bd1b569cd9ee3dc8d5b3
[de] Insert new workflow in german README file
[de] Fix some typos in chapter 3(.0)
[de] Fix some typos in chapter 3.1
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