Add ResourceCache and ProgramCache classes.

[domchen]

No description provided.

[codecov-commenter]

Codecov Report

Merging #99 (60919a0) into main (4138fac) will increase coverage by 0.17%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #99      +/-   ##
==========================================
+ Coverage   63.93%   64.11%   +0.17%     
==========================================
  Files         535      538       +3     
  Lines       25674    25704      +30     
  Branches     7244     7247       +3     
==========================================
+ Hits        16415    16480      +65     
+ Misses       4621     4618       -3     
+ Partials     4638     4606      -32     

Impacted Files	Coverage Δ
libpag/tgfx/src/gpu/Context.cpp	66.66% <0.00%> (-4.22%)	⬇️
libpag/tgfx/src/core/vectors/freetype/FTMask.cpp	60.78% <0.00%> (-3.93%)	⬇️
...ibpag/tgfx/src/gpu/opengl/GLProgramDataManager.cpp	90.32% <0.00%> (-3.23%)	⬇️
...bpag/tgfx/src/gpu/TextureMaskFragmentProcessor.cpp	58.97% <0.00%> (-2.57%)	⬇️
libpag/tgfx/src/gpu/opengl/GLProgram.cpp	82.14% <0.00%> (-1.79%)	⬇️
...pag/src/rendering/renderers/TrackMatteRenderer.cpp	45.33% <0.00%> (-1.34%)	⬇️
libpag/tgfx/src/gpu/opengl/GLDevice.cpp	45.83% <0.00%> (-1.11%)	⬇️
libpag/tgfx/src/core/Bitmap.cpp	81.25% <0.00%> (-0.79%)	⬇️
libpag/tgfx/src/core/images/webp/WebpImage.cpp	51.06% <0.00%> (-0.71%)	⬇️
libpag/tgfx/src/gpu/opengl/GLCanvas.cpp	64.13% <0.00%> (-0.69%)	⬇️
... and 64 more

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