Add Object Pooling

[jthomperoo]

Part of #148

[codecov-io]

Codecov Report

Merging #162 into master will increase coverage by 0.01%.
The diff coverage is 73.21%.

@@            Coverage Diff             @@
##           master     #162      +/-   ##
==========================================
+ Coverage   80.67%   80.68%   +0.01%     
==========================================
  Files          99      100       +1     
  Lines        3193     3345     +152     
  Branches      266      280      +14     
==========================================
+ Hits         2576     2699     +123     
- Misses        396      415      +19     
- Partials      221      231      +10     

Flag	Coverage Δ
#unittests	80.68% <73.21%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/entity/entity_manager.ts	84.05% <ø> (ø)
src/geometry/matrix_4d.ts	98.97% <ø> (ø)
src/message/message.ts	100.00% <ø> (ø)
src/standard/interpolation/interpolation_system.ts	45.00% <0.00%> (ø)
src/standard/motion/motion_system.ts	40.00% <0.00%> (-4.45%)	⬇️
src/standard/camera/camera.ts	68.00% <14.28%> (-8.20%)	⬇️
src/standard/motion/motion.ts	38.88% <14.28%> (-11.12%)	⬇️
src/shape/aabb.ts	85.29% <25.00%> (-5.03%)	⬇️
src/standard/primitive/primitive.ts	87.50% <50.00%> (-5.36%)	⬇️
src/standard/sprite/sprite.ts	72.72% <50.00%> (-5.06%)	⬇️
... and 42 more