refactor: Renderer simplification and Render plugins

[eonarheim]

===:clipboard: PR Checklist :clipboard:===

• 📌 issue exists in github for these changes
• 🔬 existing tests still pass
• 🙈 code conforms to the style guide
• 📐 new tests written and passing / old tests updated with new scenario(s)
• 📄 changelog entry added (or not needed)

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This PR simplifies the renderer code to prepare for custom render plugins, this will allow custom renderers with custom shaders to be built into excalibur.

Changes:

• Add border drawing to circles and rectangles 🎉
• Split the monolithic style renderer into separate internal renderer plugins
• Improve the Shader code abstractions, adds a safety feature and error logging to avoid common shader/webgl issues
• Remove complicated pooling strategy, and remove Poolable which is invalid in stricter TS (mentioned in Error when build using Vite #2157)