feat: new require-explicit-comment rule

[andrii-bodnar]

Add require-explicit-comment rule to enforce translator comments across Lingui macro object calls and React macro components (Trans, Plural, Select, SelectOrdinal), while allowing context as an alternative.

This aligns with the goal of providing as much contextual information as possible, which results in better translations.

[codecov]

Codecov Report

❌ Patch coverage is 98.11321% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.10%. Comparing base (e6f7e91) to head (32354cb).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/rules/require-explicit-comment.ts	98.03%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #128   +/-   ##
=======================================
  Coverage   98.10%   98.10%           
=======================================
  Files          13       14    +1     
  Lines         632      685   +53     
  Branches      212      233   +21     
=======================================
+ Hits          620      672   +52     
- Misses         12       13    +1     

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[gwolpert]

Both require-explicit-comment and require-explicit-id define nearly identical prop-lookup logic inline. Consider extracting to src/helpers.ts

I have already done this in #131 could potentially be reused.

[gwolpert]

The tagged template handler always reports, even though the docs say "unless context is provided". Tagged templates genuinely can't carry comment, but they also can't carry context, so the error message suggesting "provide context instead" is misleading. Consider rewording:

"Tagged template literal doesn't support 'comment' or 'context'. Use {{ fn }}({ comment: '...', message: '...' }) instead."