feat: asteroids-like game mode

[Bgeninatti]

No description provided.

[codecov-commenter]

Codecov Report

Merging #59 (057425d) into dev (2069642) will decrease coverage by 0.10%.
The diff coverage is 45.26%.

@@            Coverage Diff             @@
##              dev      #59      +/-   ##
==========================================
- Coverage   45.00%   44.90%   -0.11%     
==========================================
  Files          31       35       +4     
  Lines        1182     1276      +94     
  Branches      203      225      +22     
==========================================
+ Hits          532      573      +41     
- Misses        640      692      +52     
- Partials       10       11       +1     

Impacted Files	Coverage Δ
pythonium/game_modes/asteroid/player.py	0.00% <0.00%> (ø)
pythonium/game_modes/asteroid/rules.py	37.50% <37.50%> (ø)
pythonium/game_modes/asteroid/game_mode.py	51.61% <51.61%> (ø)
pythonium/game_modes/asteroid/things.py	83.33% <83.33%> (ø)
pythonium/game_modes/__init__.py	100.00% <100.00%> (ø)
pythonium/game_modes/classic_mode.py	18.60% <100.00%> (+0.77%)	⬆️
pythonium/galaxy.py	94.69% <0.00%> (-1.77%)	⬇️

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