feat: WebGLTexture garbage collection

[eonarheim]

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

• [ ] :pushpin: issue exists in github for these changes
• [ ] :microscope: existing tests still pass
• [ ] :see_no_evil: code conforms to the style guide
• [ ] :triangular_ruler: new tests written and passing / old tests updated with new scenario(s)
• [ ] :page_facing_up: changelog entry added (or not needed)

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This PR adds WebGLTexture garbage collection, it looks for textures that haven't been drawn in a minute and removes them from the GPU. If they get drawn in the future they will be reloaded

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[eonarheim]

@Autsider666 Many thanks! I'll take all of those suggestions!

[eonarheim]

@Autsider666 Thanks for the assist!