Add logo and banner

[sfmig]

TODO:

• add gradient to ethology logo?
• add attribution
• modify logo to have transparent background

Description

What is this PR

• Bug fix
• Addition of a new feature
• Other

Why is this PR needed?

What does this PR do?

References

Please reference any existing issues/PRs that relate to this PR.

How has this PR been tested?

Please explain how any new code has been tested, and how you have ensured that no existing functionality has changed.

Is this a breaking change?

If this PR breaks any existing functionality, please explain how and why.

Does this PR require an update to the documentation?

If any features have changed, or have been added. Please explain how the
documentation has been updated.

Checklist:

• The code has been tested locally
• Tests have been added to cover all new functionality
• The documentation has been updated to reflect any changes
• The code has been formatted with pre-commit

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.45%. Comparing base (446dde4) to head (831076d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #119   +/-   ##
=======================================
  Coverage   99.45%   99.45%           
=======================================
  Files           8        8           
  Lines         553      553           
=======================================
  Hits          550      550           
  Misses          3        3           

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[sfmig]

Some feedback from NIU meeting:

• more contrast between overlays and porcupine; maybe fade the porcupine?
• reduce number of keypoints and tracks, and reduce number of colours in keypoints.
  • Have skeleton in one color. Tracks not very visible.
• it can be confusing that the colours used don't map to the array slices
  • how can I fix this without adding too many colours?
• remove colour coding from movement cube? make it all blue or grey?