Adds white, pink and brownian noise to the sound library

[ashutoshgngwr]

Testing

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

Others

• Fixes #0
• Connects #0

[codecov]

Codecov Report

Merging #125 into master will increase coverage by 0.39%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #125      +/-   ##
============================================
+ Coverage     77.99%   78.39%   +0.39%     
- Complexity      107      110       +3     
============================================
  Files            11       11              
  Lines           709      722      +13     
  Branches         85       89       +4     
============================================
+ Hits            553      566      +13     
+ Misses           88       86       -2     
- Partials         68       70       +2     

Impacted Files	Coverage Δ	Complexity Δ
...java/com/github/ashutoshgngwr/noice/sound/Sound.kt	100.00% <100.00%> (ø)	5.00 <0.00> (ø)
...shgngwr/noice/fragment/SavePresetDialogFragment.kt	77.77% <0.00%> (+13.07%)	7.00% <0.00%> (+3.00%)

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