Frustrum culling for tilemap

[ekharkunov]

Fixes #6938, #8744

Technical changes

One render entry for tile map is tilemap region. So I check visibility for whole region, not for every tile. Region size now is 32x32 tiles. That's why id region partially outside of the camera frustrum - is will fully rendered.

Docs: defold/doc#435

PR checklist

• Code
  • Add engine and/or editor unit tests.
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Example of a well written PR description:

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There was a anomaly in the carbon chroniton propeller, introduced in version 8.10.2. This fix will make sure to reset the phaser collector on application startup.

Fixes #1234

### Technical changes
* Pay special attention to line 23 of phaser_collector.clj as it contains some interesting optimizations
* The propeller code was not taking into account a negative phase.

[JCash]

lgtm.
Small note about readability that might be improved.