Improve console output

[Vladyslav-Kuksiuk]

This PR:

• Adds new flags for binary execution:

  • --info — enables the INFO logging level. Without this flag, the WARN logging level is used by default.
  • --stacktrace — enables error stack traces. Without this flag, only error messages are shown.

• Updates console output for successful embedding:

  • With changed files:
  
  • Without changed files:
  

• Provides meaningful error messages for fragmentation issues:

  • #docfragment or #enddocfragment prefixes without names:
  
  • Invalid #docfragment or #enddocfragment name syntax:
  

• Improves error messages for missing code fragments:
  

• Updates binaries and removes developer system info from stack traces:
  

• Resolves:

  • Improve console output for the absence of embed-code tags #4
  • Improve diagnostics for the case of missing tag name in #enddocfragment #5
  • Improve diagnostics for missing source code file #6
  • Improve console output for general use case #7

[MykytaPimonovTD]

@Vladyslav-Kuksiuk LGTM with one comment.