Add memory efficient polyline decoder

[kmadsen]

I'm making a more memory efficient replayer mapbox/mapbox-navigation-android#6636

The first large memory task is to decode a geometry string. This pull requests makes it possible to pass in a string as an InputStream, so that it can come from a file. It will then decode the polyline upon request.

It is true that the geometry string is inside a DirectionsResponse so it is already memory inefficient. The reason I'm going ahead with it now is because it simpler for streaming objects to consume downstream.

[codecov]

Codecov Report

Merging #1518 (7a6c048) into main (6b63f16) will increase coverage by 0.03%.
The diff coverage is 91.11%.

@@             Coverage Diff              @@
##               main    #1518      +/-   ##
============================================
+ Coverage     76.94%   76.97%   +0.03%     
- Complexity      938      946       +8     
============================================
  Files           129      130       +1     
  Lines          4025     4048      +23     
  Branches        582      582              
============================================
+ Hits           3097     3116      +19     
- Misses          678      682       +4     
  Partials        250      250              

Impacted Files	Coverage Δ
...java/com/mapbox/geojson/utils/PolylineDecoder.java	90.24% <90.24%> (ø)
...n/java/com/mapbox/geojson/utils/PolylineUtils.java	73.56% <100.00%> (-4.54%)	⬇️

[LukasPaczos]

Suggested change

	public PolylineDecoder(InputStream inputStream, int precision) {
	public PolylineDecoder(@NonNull InputStream inputStream, int precision) {

[LukasPaczos]

Suggested change

	@Override
	public Point next() throws NoSuchElementException {
	@Override
	@NonNull
	public Point next() throws NoSuchElementException {

I don't remember if you can change the annotation of an overridden method though 🙃