Add Autoregressive Moving Average filter

[agap]

No description provided.

[codecov]

Codecov Report

Merging #45 into master will increase coverage by 0.47%.
The diff coverage is 97.05%.

@@            Coverage Diff             @@
##           master      #45      +/-   ##
==========================================
+ Coverage   93.60%   94.08%   +0.47%     
==========================================
  Files          18       18              
  Lines         516      524       +8     
  Branches       56       52       -4     
==========================================
+ Hits          483      493      +10     
  Misses         23       23              
+ Partials       10        8       -2     

Impacted Files	Coverage Δ
...rc/main/java/aga/android/luch/distance/Ranger.java	91.30% <87.50%> (-8.70%)	⬇️
.../src/main/java/aga/android/luch/BeaconScanner.java	88.53% <100.00%> (-0.29%)	⬇️
...ain/java/aga/android/luch/distance/ArmaFilter.java	100.00% <100.00%> (ø)
...ain/java/aga/android/luch/distance/RssiFilter.java	100.00% <100.00%> (ø)
...ndroid/luch/distance/RunningAverageRssiFilter.java	100.00% <100.00%> (ø)

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