Exclude images with bad motion correction results from tomogram alignment

[stephen-riggs]

Relion's motion correction sometimes fails on local alignment and produces abstract images. These then get put into tomogram alignment and disrupt the outputs.

The only way I can readily see to avoid this is to check the star files written out by Relion.
Firstly, we need to check if the file exists, then if the local motion model was used, and finally when coefficients were found.
I've put a threshold of 1000 on the local alignment coefficients, but this is an arbitrary choice.

This will result in an increase in I/O and maybe slow down alignment slightly.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.85%. Comparing base (3bf4ce8) to head (108ff22).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #122      +/-   ##
==========================================
+ Coverage   74.80%   74.85%   +0.05%     
==========================================
  Files          52       52              
  Lines        6735     6750      +15     
  Branches      948      953       +5     
==========================================
+ Hits         5038     5053      +15     
  Misses       1247     1247              
  Partials      450      450