added shortcuts to add rectangle and circle

[ikorason]

cmd + r = add rectangle
cmd + o = add circle (if using c will interference with copy paste so decided to use o)

[codecov]

Codecov Report

Merging #230 (e4ac80a) into main (6257308) will decrease coverage by 0.07%.
Report is 6 commits behind head on main.
The diff coverage is 0.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #230      +/-   ##
==========================================
- Coverage   12.84%   12.78%   -0.07%     
==========================================
  Files          59       59              
  Lines        7537     7573      +36     
==========================================
  Hits          968      968              
- Misses       6569     6605      +36     

Files	Coverage Δ
src/ui_plugin/systems/keyboard.rs	0.00% <0.00%> (ø)