- adds detailing functions for L-Shape, U-Shape, Bent shape,
  Straight rebars for slab reinforcement
- Fixed default value of orientation in makeBentShapeRebar

- adds typing annotations for arguments of makeSlabReinforcement

- adds different combinataion of Straight, U-Shaped, L-Shaped,
  BentShaped rebars for parallel and cross rebars in Slab
  Reinforcement.
- format Rebarfunc.py using black.

- add "Left", "Right" and "Alternate" orientation to LShapeRebar
  hook

- add distribution rebars for slab spaning in one/two direction
- improve bent arms sepration for bent shape rebars

- prevent collision of distribution rebar with an angled arm of bent
  shape rebar (due to varying angle) by adding bent shape rebar
  diameter in front/rear cover of distribution rebars.

- add layout files for making slab reinforcement
- add integration of UI with python api for making slab
  reinforcement

- remove seperate distribution rebars tabs for parallel and cross rebars
- add distribution rebars fields in main cross/parallel ui pages