Physics V2 Iteration 3

[CedricGuillemet]

Iteration 3 featuring:

• More code documentation
• Transform <-> Body synchronization
• Typos
• Engine Component using TransformNode instead of Mesh

[bjsplat]

Please make sure to label your PR with "bug", "new feature" or "breaking change" label(s).
To prevent this PR from going to the changelog marked it with the "skip changelog" label.

[bjsplat]

Snapshot stored with reference name:
refs/pull/13450/merge

Test environment:
https://babylonsnapshots.z22.web.core.windows.net/refs/pull/13450/merge/index.html

To test a playground add it to the URL, for example:

https://babylonsnapshots.z22.web.core.windows.net/refs/pull/13450/merge/index.html#WGZLGJ#4600

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[RaananW]

Looks great. i'll follow this PR and fully review it when it is our of draft mode

[sebavan]

I see what you did there !!!! :-)

[sebavan]

I think it is all good for review @RaananW