feat: Additional format support for translation memory import

[gersona]

Proposed changes

Extend memory translation upload support to formats other than JSON and TMX with automatic format detection and content parsing. Other files usually require that source_language and target_language are passed as arguments

Checklist

• Lint and unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added documentation to describe my feature.
• I have squashed my commits into logic units.
• I have described the changes in the commit messages.

Other information

• fixes Possibility to import the translation memory in formats different from TMX and JSON #2280

[codecov]

Codecov Report

Attention: Patch coverage is 97.53086% with 2 lines in your changes missing coverage. Please review.

Project coverage is 90.89%. Comparing base (0239904) to head (c0835d2).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
weblate/memory/models.py	92.85%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12993      +/-   ##
==========================================
+ Coverage   90.87%   90.89%   +0.02%     
==========================================
  Files         598      598              
  Lines       61681    61758      +77     
  Branches     6367     6376       +9     
==========================================
+ Hits        56055    56138      +83     
+ Misses       3964     3960       -4     
+ Partials     1662     1660       -2     

Files with missing lines	Coverage Δ
weblate/memory/forms.py	100.00% <100.00%> (ø)
...eblate/memory/management/commands/import_memory.py	100.00% <100.00%> (ø)
weblate/memory/tests.py	100.00% <100.00%> (ø)
weblate/memory/views.py	95.97% <ø> (ø)
weblate/memory/models.py	84.87% <92.85%> (+2.29%)	⬆️

... and 2 files with indirect coverage changes