feat: structure align output into www and Offline-HTML dirs

[joanise]

PR Goal?

As agreed Wednesday, structure the readalongs align output like the web app's Web Bundle, with www and Offline-HTML subfolders.

Feedback sought?

run align with -o html and confirm you like the results

Priority?

normal

Tests added?

updated existing tests

How to test?

run readalongs align with various output options.

Confidence?

medium-high

Version change?

[joanise]

Doh, I only fixed some tests. Turning this back into a draft for the moment.

[joanise]

OK, fixed, tests should pass now, this PR is ready to review.

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 87.21%. Comparing base (29ec752) to head (823a2b7).
Report is 1 commits behind head on main.

Files	Patch %	Lines
readalongs/align.py	81.81%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #231      +/-   ##
==========================================
- Coverage   87.24%   87.21%   -0.04%     
==========================================
  Files          21       21              
  Lines        1772     1783      +11     
  Branches      321      323       +2     
==========================================
+ Hits         1546     1555       +9     
  Misses        189      189              
- Partials       37       39       +2     

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[deltork]

It all looks good!

[joanise]

Improvements pushed, this should be ready to re-review now. Thanks for the review!

[deltork]

Looks ready