Age3d

Added
- `find_accessible` Function
- raycast from all vertices on mesh and determine accessible from given direction
- examples for 'find_accessible`
- Tests for `find_accessible`


Modified
- `erode` Function
- Added `direction` parameter
- Modified Behavior with determining starting positions of erosion particles using `find_accessible` and given `direction`

Modified
- Erode Function
- Added Raycasting Logic to only remove material from mesh
- Added `verbose` func param to include printing information for debugging

Modified
- Erode Function
- Added prevention logic for erosion particles to move up the mesh
- Added Angle Calculations & Checking for Particle Descent to stop erosion particles rotating direction

Added
- Documentation for functions
- IntelliSense QuickInfo

Supports:

- importing `.stl` model files
- Vertex Selection filtered by Height
- Vertex Selection by Triangle Neighbors
- Point Cloud Creation
- Visualization of Mesh and Point Clouds
- Erosion of Mesh with customizable number of erosion particles and lifetime of particle