[Feature] Add TTSR Discriminator

[Yshuo-Li]

No description provided.

[codecov]

Codecov Report

Merging #381 (5f397d5) into master (7328829) will decrease coverage by 0.00%.
The diff coverage is 86.36%.

@@            Coverage Diff             @@
##           master     #381      +/-   ##
==========================================
- Coverage   80.44%   80.43%   -0.01%     
==========================================
  Files         185      186       +1     
  Lines        9889     9911      +22     
  Branches     1441     1444       +3     
==========================================
+ Hits         7955     7972      +17     
- Misses       1742     1745       +3     
- Partials      192      194       +2     

Flag	Coverage Δ
unittests	80.42% <86.36%> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
...edit/models/components/discriminators/ttsr_disc.py	85.71% <85.71%> (ø)
...medit/models/components/discriminators/__init__.py	100.00% <100.00%> (ø)
...ls/components/stylegan2/generator_discriminator.py	84.93% <0.00%> (-1.21%)	⬇️

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