Feat/devsu 2830 load flags

[elewis2]

Adds functionality to include 'flags' for observed variants (comma-separated string list, for display in the kb summary page in IPR).

Includes ability to pass a csv of transcript flags (eg MANE, APRIS, canonical transcript) as an argument to the report creation function, match these to the transcripts of observed variants, and include the flags for upload.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 93.84615% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.46%. Comparing base (3d54876) to head (59f673c).
⚠️ Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
pori_python/ipr/main.py	77.77%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #107      +/-   ##
===========================================
+ Coverage    82.98%   83.46%   +0.48%     
===========================================
  Files           18       18              
  Lines         2480     2546      +66     
===========================================
+ Hits          2058     2125      +67     
+ Misses         422      421       -1     

Flag	Coverage Δ
unittests	83.46% <93.84%> (+0.48%)	⬆️

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