MAPSJS-2660: Clean MapViewUtils namespace

[atomicsulfate]

Remove from MapViewUtils functions that are unrelated to MapView.
MapViewUtils namespace has now only functions related to view transformations, camera setup, and view bounds computation.

[codecov]

Codecov Report

Merging #2302 (5e1a5fc) into master (5616f35) will increase coverage by 0.01%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##           master    #2302      +/-   ##
==========================================
+ Coverage   68.29%   68.30%   +0.01%     
==========================================
  Files         317      319       +2     
  Lines       27795    27809      +14     
  Branches     6230     6233       +3     
==========================================
+ Hits        18982    18995      +13     
- Misses       8813     8814       +1     

Impacted Files	Coverage Δ
@here/harp-utils/lib/DOMUtils.ts	16.66% <16.66%> (ø)
@here/harp-mapview/lib/geometry/Object3DUtils.ts	69.34% <69.34%> (ø)
@here/harp-geoutils/lib/tiling/TileKeyUtils.ts	92.13% <100.00%> (+5.86%)	⬆️
@here/harp-mapview/lib/FrustumIntersection.ts	97.43% <100.00%> (ø)
@here/harp-mapview/lib/Tile.ts	82.94% <100.00%> (ø)
@here/harp-mapview/lib/Utils.ts	83.39% <100.00%> (+3.31%)	⬆️
@here/harp-mapview/lib/VisibleTileSet.ts	79.77% <100.00%> (-0.05%)	⬇️
@here/harp-mapview/lib/MapMaterialAdapter.ts	92.14% <0.00%> (-0.72%)	⬇️

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[ThFischer]

More efficient:
let val = .5;
export const powerOfTwo = Array(53).fill(0).map(() => val *= 2);

[atomicsulfate]

good catch!