move movie-frames into movies table

[simsong]

There is no need for a separate movie frames table. The maximum dynamodb element size is 256K. We can store all of the tracked frames in that. This is a placeholder for that.

[codecov]

Codecov Report

❌ Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 69.93%. Comparing base (14f3c85) to head (a268a23).

Files with missing lines	Patch %	Lines
src/app/flask_api.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #811   +/-   ##
=======================================
  Coverage   69.93%   69.93%           
=======================================
  Files          48       48           
  Lines        5159     5159           
  Branches      271      271           
=======================================
  Hits         3608     3608           
  Misses       1417     1417           
  Partials      134      134           

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[simsong]

I just don't think this is worth doing right now.