Migrates to using vector drawables

[ashutoshgngwr]

Changes

• Add single density vector drawables
• Remove multi density PNG drawables

Testing

• Tested on a physical device
• Added or modified unit test cases

Others

• Fixes #0
• Connects #0

[codecov]

Codecov Report

Merging #176 into 0.7.x will not change coverage.
The diff coverage is 87.87%.

@@            Coverage Diff            @@
##              0.7.x     #176   +/-   ##
=========================================
  Coverage     82.05%   82.05%           
  Complexity      134      134           
=========================================
  Files            12       12           
  Lines           847      847           
  Branches         83       83           
=========================================
  Hits            695      695           
  Misses           91       91           
  Partials         61       61           

Impacted Files	Coverage Δ	Complexity Δ
...m/github/ashutoshgngwr/noice/MediaPlayerService.kt	29.72% <0.00%> (ø)	5.00 <0.00> (ø)
...thub/ashutoshgngwr/noice/fragment/AboutFragment.kt	99.28% <100.00%> (ø)	6.00 <0.00> (ø)

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