Add support for per-chapter remarks

[pmachapman]

Fixes #905.

Requires sillsdev/machine#408.

---

This change is 

[codecov-commenter]

Codecov Report

❌ Patch coverage is 82.97872% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.27%. Comparing base (97ef312) to head (c6be0c7).

Files with missing lines	Patch %	Lines
...rval.Translation/Services/UsfmGenerationService.cs	82.97%	5 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #934      +/-   ##
==========================================
- Coverage   66.30%   66.27%   -0.04%     
==========================================
  Files         371      371              
  Lines       21559    21539      -20     
  Branches     2743     2744       +1     
==========================================
- Hits        14294    14274      -20     
- Misses       6257     6258       +1     
+ Partials     1008     1007       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[ddaspit]

@ddaspit reviewed 3 files and all commit messages, and made 1 comment.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on Enkidu93).