feat: merge review suggestions from both clang tools

[2bndy5]

This is a culmination of

• feat: get clang-tidy fixes regardless of tidy-review value #354
• feat: use diff instead of clang-format XML output #347

As this builds on the plan discussed in cpp-linter/cpp-linter#82, it it the last step needed before providing a patch that consumers can push to auto-fix lints.

Intended flow of data

1. run clang-tidy before running clang-format
2. after running clang-tidy save the patched file to cache
3. after running clang-format:
   • check for clang-tidy patch in cache.
   • if cached patch is present, run clang-format on the clang-tidy patch. This step includes formatting lines that clang-tidy changed and lines that clang-format changed.
   • if cached patch is not present (clang-tidy was not run on the file), then cache the clang-format fixes instead.
   • --lines-changed-only is respected, but this may need tweaking in the future.
4. when creating a PR review,
   • only add hunks to the patch that are not present in the review comments.
   • I added a parameter to also calculate (and display) how many review comments were reused in previous PR reviews.
   • PR review summaries are worded better if the env var CPP_LINTER_PR_REVIEW_SUMMARY_ONLY = 1

---

Adjusted tests accordingly.

[codecov]

Codecov Report

❌ Patch coverage is 85.33333% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.07%. Comparing base (9c54ee6) to head (646fc1c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cpp-linter/src/clang_tools/clang_format.rs	70.49%	18 Missing ⚠️
cpp-linter/src/common_fs.rs	89.87%	8 Missing ⚠️
cpp-linter/src/clang_tools/mod.rs	89.55%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #358      +/-   ##
==========================================
- Coverage   92.84%   92.07%   -0.77%     
==========================================
  Files          23       23              
  Lines        3464     3519      +55     
==========================================
+ Hits         3216     3240      +24     
- Misses        248      279      +31     

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