Book Features and Test Modules Organization chapters (#55, #64, #102, #103, #123)

[ilslv]

Resolves #55, #64, #102, #103, #123

Synopsis

New features can be tricky to find, especially at the beginning.

Solution

Add Features and Test Modules Organisation chapters to the book.

Checklist

• Created PR:
  • In draft mode
  • Name contains Draft: prefix
  • Name contains issue reference
  • Has assignee
• Documentation is updated (if required)
• Tests are updated (if required)
• Changes conform code style
• CHANGELOG entry is added (if required)
• FCM (final commit message) is posted
  • and approved
• Review is completed and changes are approved
• Before merge:
  • Milestone is set
  • PR's name and description are correct and up-to-date
  • Draft: prefix is removed
  • All temporary labels are removed

[ilslv]

FCM

Add "Features" and "Test Modules Organization" chapters to the Book (#55, #64, #102, #103, #123, #132)

Additionally:
- fix outputing English in writer::Basic instead of parsed keywords

[tyranron]

@ilslv some more clear code examples are required, anything else seems to be OK.

[tyranron]

This case and the above requires code examples. It hard to grasp the thing without them. Please, add the code examples directly to rate docs, so the provided links will lead there.