Implement NFT emotes loop property

[olavra]

Emotes flagged as "loop" needs to be played as a loop

Documentation

Acceptance Criteria

• Emotes flagged as loop are played continuously
• Moving the player in any direction or jump cancels the emote loop
• Other players can see players reproducing loop emotes in a seamless way (no gaps between iterations)

[Antivortex]

PR with this change https://github.com/decentraland/unity-renderer/pull/2937