view books and update book flavour

[elfkuzco]

Rationale

This PR enhances the UI to have a dedicated books view (different from the books tab in the Inbox view). Whereas the books in the inbox tab are set to fetch books that "need attention", the books view allows user to fetch even those that do not, along with newer filters. The PR also adds capability to update a book's flavour

Changes

• create dedicated book view for listing all books
• add capability to edit book flavour via API/UI
• create different set of filters for the new book view differnt from the inbox view filters

This closes #293

[elfkuzco]

Not sure why CI isn't running checks...

[benoit74]

You should try to amend commit (with nothing different, just a new commit ID) and push again. Probably a bug githubside.

[benoit74]

Please check CI is green and then you can merge, LGTM

[codecov]

Codecov Report

❌ Patch coverage is 88.23529% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.60%. Comparing base (a61b6be) to head (156e466).

Files with missing lines	Patch %	Lines
backend/src/cms_backend/db/books.py	42.85%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #299      +/-   ##
==========================================
+ Coverage   81.52%   81.60%   +0.08%     
==========================================
  Files          58       58              
  Lines        2571     2604      +33     
  Branches      259      264       +5     
==========================================
+ Hits         2096     2125      +29     
- Misses        405      407       +2     
- Partials       70       72       +2     

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