feat: DotRecast for Bepu physics navigation and nav mesh generation

[Doprez]

PR Details

• re-adds the bepu navigation library to the source.
• Moves the core Dotrecast logic out of the Bepu library for others to use elsewhere.
• Adds extra configuration to pathfinding options
• Adds the ability to build multiple nav meshes with different configurations
• Adds the Collision mask to the build when gathering colliders
• Lots of clean up for better readability

Related Issue

None.

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.

Remaining work

Remaining changes I want to make for this PR:

• Dedicated collider tracker (similar to how Bullet sends an event to notify navigation build events)
• conversions to DotRecast colliders (Will be more useful with dynamic meshes)
• Dynamic meshes.
• A couple more separation of concern changes for the current builder