Introduce ChapterSelectionFragment / ViewModel

[xizzhu]

It is a preparation for refactoring the giant ReadingActivity.

[codecov-commenter]

Codecov Report

Merging #254 (125e3eb) into master (b5b46b0) will increase coverage by 0.44%. The diff coverage is 84.44%.

@@            Coverage Diff             @@
##           master     #254      +/-   ##
==========================================
+ Coverage   75.64%   76.09%   +0.44%     
==========================================
  Files         125      126       +1     
  Lines        5700     5743      +43     
  Branches      774      777       +3     
==========================================
+ Hits         4312     4370      +58     
+ Misses       1242     1228      -14     
+ Partials      146      145       -1     

Impacted Files	Coverage Δ
...e/xizzhu/android/joshua/reading/ReadingActivity.kt	20.51% <0.00%> (+0.18%)	:arrow_up:
...joshua/reading/chapter/ChapterSelectionFragment.kt	77.27% <77.27%> (ø)
...droid/joshua/reading/chapter/ChapterListAdapter.kt	91.66% <86.66%> (-0.50%)	:arrow_down:
...oshua/reading/chapter/ChapterSelectionViewModel.kt	96.96% <96.96%> (ø)
.../android/joshua/reading/chapter/ChapterListView.kt	90.62% <100.00%> (+1.33%)	:arrow_up:
...oid/joshua/reading/chapter/ChapterSelectionView.kt	72.72% <100.00%> (+4.54%)	:arrow_up:
...d/joshua/reading/toolbar/ReadingToolbarFragment.kt	68.96% <100.00%> (ø)
.../xizzhu/android/joshua/core/BibleReadingManager.kt	79.59% <0.00%> (+2.04%)	:arrow_up:
.../main/kotlin/me/xizzhu/android/joshua/Injection.kt	88.46% <0.00%> (+3.84%)	:arrow_up:
... and 2 more

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