Add ability to sort by rating

[tlaporte]

Small change to allow sorting by rating.

Would be nice to choose ascending/descending sort as well, but this was simple enough to do with no experience working on Android.

This was tested in the emulator in Android Studio.

[commit-lint]

Features

• add ability to sort by rating (ab9053f)

Tests

• fix copy/paste error on sort by rating function name (81f9a85)

Contributors

tlaporte

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[codecov]

Codecov Report

Merging #690 (81f9a85) into master (3b1e2cb) will decrease coverage by 0.02%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master     #690      +/-   ##
============================================
- Coverage     69.09%   69.07%   -0.03%     
  Complexity      440      440              
============================================
  Files           109      109              
  Lines          1676     1678       +2     
  Branches        142      142              
============================================
+ Hits           1158     1159       +1     
- Misses          475      476       +1     
  Partials         43       43              

Impacted Files	Coverage Δ
...esire/nekome/app/series/list/view/SeriesAdapter.kt	0.00% <0.00%> (ø)
...n/java/com/chesire/nekome/core/flags/SortOption.kt	85.71% <100.00%> (+2.38%)	⬆️

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[Chesire]

Hey there , thanks for this, changes look solid.
Just to clarify, the intention is to sort by user rating correct?

[tlaporte]

Yeah, I find it useful to look at my list sorted by my rating to see what I liked/disliked most pretty easily. This and the ability to choose ascending/descending sort are the only features for my use case that are missing vs the Kitsu app, but I prefer this app because it is less cluttered with features I don't use.

[Chesire]

Sounds good, I'll look into a different way to show the sorting window at some point so it would be possible to show the ascending and descending options (#691).
Thanks for this PR 👍