Particle systems: add support for fog

[Popov72]

See https://forum.babylonjs.com/t/hide-particles-in-the-built-in-fog/47815

[bjsplat]

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[bjsplat]

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[bjsplat]

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[Foxhoundn]

@Popov72 Any chance it could also be done for Lines? As far as I can see lines created with CreateLines also ignore fog. Thanks a lot!

[Popov72]

See #14768