Pgeng

- Added classes for Polygons and Circles with collision
- Added `angle_towards` to Spark
- Updated `Spark.gravity`
- Added customizable lengths to Spark with `set_spark_attributes`
- Added `center` function to Screen
- Added `width` variable to Particle
- Changed ShockWave `location` variable to `center`
- Changed font error messages
- Documentation fixes
- Updated examples and added one for collisions: [collisions.py](https://github.com/Qamynn/pgeng/blob/main/examples/collisions.py)

- Added examples for `Spark` and `Flame`
- Added functions for reading and writing to files with gzip
- Changed the `failed_imports` message if the `ImportError` was not from pgeng
- General code improvements

- Added alpha support to `palette_swap`
- Updated `__init__.py` so `failed_imports` gets deleted and is invisible
- Removed `Screen.screenshot()` since it was kind of useless
- Updated Entity code to use functions like `round`
- Removed the alpha values of Font colours and using `Path().joinpath`
- Documentation fixes

- Added [flame.py](https://github.com/Qamynn/pgeng/blob/main/pgeng/vfx/flame.py) from [tank-king](https://github.com/tank-king)
- Added VFX Package instead of single file
- Made every VFX class and function a single file
- Added the length of an entire animation to animations_data for every animation `animations_data[2]`
- Every function makes the path absolute with `pathlib.Path(path).resolve()`
- Added `location` to `TextButton` and `rect` became a property
- Added `convert_alpha` to `load_image`
- Added ramp data to `collision_types`
- Made size a list for `Tile`
- Fixed `set_volume`
- Changed the name of every file or directory to lowercase
- Minor documentation fixes

- Minor bugfixes

- Added `__version__` variable to `__init__.py`
- Renamed Font images
- Fixed Particle momentum bug
- Fixed TextButton documentation