Proto commits in google-deepmind/dm_control

These 3 commits are when the Protocol Buffers files have changed:

Commit:c73ba65
Author:Steven Bohez
Committer:Copybara-Service

Internal change to mocap proto definition. PiperOrigin-RevId: 350150989 Change-Id: Ifc1be0c98ba3cb0ce81031d4de377f8c642994c4

The documentation is generated from this commit.

Commit:e0f115d
Author:DeepMind
Committer:Copybara-Service

Internal change to mocap proto definition. PiperOrigin-RevId: 335893588 Change-Id: Ica6d4b6b3369c090dabdac7c5a8028f547f7a1ee

Commit:fb0199e
Author:Saran Tunyasuvunakool
Committer:Saran Tunyasuvunakool

Release motion capture tracking infrastructure and task. Also move labmaze dependency to the main dm_control package, which deprecates the use of [locomotion_mazes] extra feature. PiperOrigin-RevId: 322773188 Change-Id: I67b1a6fe589a5704651c2ebbf6d1a0795300e40e