[Refactor] Add PoseLifter, TemporalRegressionHead, TrajectoryRegressionHead

[Tau-J]

Motivation

Modification

BC-breaking (Optional)

Use cases (Optional)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (refactor_3d@7dc182c). Click here to learn what that means.
Patch has no changes to coverable lines.

❗ Current head cb492a2 differs from pull request most recent head ac01cd0. Consider uploading reports for the commit ac01cd0 to get more accurate results

Additional details and impacted files

@@              Coverage Diff               @@
##             refactor_3d    #2311   +/-   ##
==============================================
  Coverage               ?   81.50%           
==============================================
  Files                  ?      239           
  Lines                  ?    14218           
  Branches               ?     2427           
==============================================
  Hits                   ?    11588           
  Misses                 ?     2064           
  Partials               ?      566           

Flag	Coverage Δ
unittests	81.50% <0.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.