feat: Support reflecting models on download.

[bvanelli]

• Adds reflection when loading the database from Actual. This means that unknown columns will not be supported even when they are not present on the model. This should ensure that migrations will not break as often.
• Possibly dangerous migrations and the method create_budget now raise warnings due to the impossibility of running custom Javascript code on the Python wrapper.
• Support for Actual Server 24.9.0
• Reworked the parsing of the JS migrations to account for changes done in Actual 24.9.0

Thanks to @HamedHemati for the contributions on #hackergarten

Closes #66

Closes #58

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.05%. Comparing base (846b09d) to head (49f4b44).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #65      +/-   ##
==========================================
+ Coverage   96.95%   97.05%   +0.09%     
==========================================
  Files          13       14       +1     
  Lines        1842     1904      +62     
==========================================
+ Hits         1786     1848      +62     
  Misses         56       56              

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