Pyangle

- `Angle.__init()` & `UnlimitedAngle.__init__()` can param with `Angle` (sub-)class
- Add & Pass tests for `__init__()`

- Update init, add import `UnlimitedAngle`
- Update README.md, add use guidance

- class `UnlimitedAngle`
- add `to_Angle()`
- pass `UnlimitedAngleTest`

- Provide `get_nearest_angle(angle, angles)`
- Provide `get_furthest_angle(angle, angles)`
- Feature 2.4 Preview

> module AngleListAPIs
- [x] `from_atan2_list_to_angle_list(angles: [(float, float)]) -> ["Angle"]`
- [x] `from_degrees_list_to_angle_list(angles: [float]) -> ["Angle"]`
- [x] `from_rad_list_to_angle_list(angles: [float]) -> ["Angle"]`
- [x] `from_angle_list_to_atan2_list(angles: ["Angle"]) -> [(float, float)]`
- [x] `from_angle_list_to_degrees_list(angles: ["Angle"]) -> [float]`
- [x] `from_angle_list_to_rad_list(angles: ["Angle"]) -> [float]`
> Test cases passed