Replaces buble with bable

Cleanup BatchRenderer internal names and documentation (#5852) ...

I have edited the BatchRenderer class. The following major changes were
made:

1. Changed old `vertexCount` to `_flushId`. This is because the name
itself was misleading. It signified the number of flushes in the
current frame.

2. Renamed `vaos` and `vaosMax` to `_packedGeometries` and
`_packedGeometryPoolSize`. They _were not_ VAOs in the sense
that they binded all the buffers automatically to the WebGL
context. Instead, they were just reusable `BatchGeometry` objects.

3. Renamed `groups` to `_drawCalls`. That is what they are, and it
makes more sense, especially after documenting it.

4. Renamed all private variables by adding a _ prefix.

5. Added documentation to all private/public properties and methods.

6. Fixed destroy(). It was nullifying non-existent variables. They
were probably from when this class was being built/tested. I've fixed
it so that it nullifies the correct resources.

7. contextChange signal is now hooked in `BatchRenderer` rather than
the `BatchPluginFactory#create`. This makes sense since the former
is the one implementing the `contextChange` signal.

8. SIDE EFFECT: Graphics used the `shader` property of `BatchRenderer`,
and since that was deemed a private properties, it broke. It fixed that
by making Graphics use `_shader`.

9. I reordered the way in which properties are initialized in the
constructor. The most important/public ones are on the top. They are
ordered in a way that makes a new-comer sense.

10. Reordered methods. The first methods are related to rendering and
are lifecycle-type methods: contextChange, render, flush, and destroy. Then
the start and stop methods. Then the private methods getAttributeBuffer,
getIndexBuffer, and packInterleavedGeometry.

11. Renamed packGeometry to packInterleavedGeometry; this is because
the method doesn't take any geometry to put into. Rather it takes
the interleaved buffers.

12. Documented literally anything else.

Use OffscreenCanvas for measureText if available (#5804)

GroupD8 documentation (#5849)

Add JSDoc comments on PIXI.Transform (#5843)

Prevented System from attaching itself to the Renderer's contextChange signal (#5848)

Fix cacheAsBitmap filter (#5844)

Fix for the SVGResource#valid issue (#5819)

Fix the DisplayObject#cacheAsBitmap issue (#5841)

Fix RenderTexture not working on Canvas with pixi-legacy (#5840)

Change DisplayObject#hitArea type declaration to support more hit-area classes (#5827)

webgl2 extension fix (#5829)

Fixes the prepare system (#5834)

Small optimization with text and gradients (#5835)

Fix TextStyle.whiteSpace param type (#5820)

Add JSDoc comments on the TextureUvs properties (#5828)

SVGResource constructor has absolute size options (#5776)

Fix for the mask type declaration (#5822)

Fix for the empty Graphics batchability issue (#5821)

Make createIndicesForQuads public, support uint32 (#5788)

Adds a setting that allows disabling the 'failIfMajorPerformanceCaveat' flag used in the 'isWebGLSupported' function (#5811)

Compatibility with older typescript OffscreenCanvas type (#5813)

Typing and documentation improvements (#5803)

Adds floats internal format for webgl1 and webgl2 (#5770)

Bump floss for 3.0 & codecov integration (#5792)

Fixes Graphics clear fill and line style settings (#5797)

Renames StateSystem.setState to StateSystem.set (#5791)

More typing fixes (#5790)

Fix JSDoc type of refCount (#5787)

Add types to deployment (#5779)