Share usage data

[talmo]

Description

Add functionality to share basic usage data on GUI launch.

See docs for more info:

• https://sleap.ai/help.html#usage-data

• sleap/docs/help.md

  Lines 124 to 130 in 21dea31

  	### What is usage data?
  	To help us improve SLEAP, you may allow us to collect basic and **anonymous** usage data. If enabled from the **Help** menu, the SLEAP GUI will transmit information such as which version of Python and operating system you are running SLEAP on.
  	This helps us understand on which types of computers SLEAP is being used so we can ensure that our software is maximally accessible to the broadest userbase possible, for example, by telling us whether it's safe to update our dependencies without breaking SLEAP for most users. Collecting usage data also helps us get a sense for how often SLEAP is being used so that we can report its impact to external grant funding agencies.
  	You can opt out at any time from the menu (this preference will be stored). If you want to prevent these data from being shared with us, you can launch the GUI with `sleap-label --no-usage-data`. Usage data is only shared when the GUI is used, not the API or CLIs.

Types of changes

• Bugfix
• New feature
• Refactor / Code style update (no logical changes)
• Build / CI changes
• Documentation Update
• Other (explain)

Does this address any currently open issues?

[list open issues here]

Outside contributors checklist

• Review the guidelines for contributing to this repository
• Read and sign the CLA and add yourself to the authors list
• Make sure you are making a pull request against the develop branch (not main). Also you should start your branch off develop
• Add tests that prove your fix is effective or that your feature works
• Add necessary documentation (if appropriate)

Thank you for contributing to SLEAP!

❤️

[codecov]

Codecov Report

Merging #1038 (1592b84) into develop (7dc80a6) will increase coverage by 0.02%.
The diff coverage is 84.84%.

@@             Coverage Diff             @@
##           develop    #1038      +/-   ##
===========================================
+ Coverage    66.74%   66.77%   +0.02%     
===========================================
  Files          127      127              
  Lines        21527    21557      +30     
===========================================
+ Hits         14368    14394      +26     
- Misses        7159     7163       +4     

Impacted Files	Coverage Δ
sleap/prefs.py	86.48% <ø> (ø)
sleap/gui/app.py	76.94% <80.00%> (+0.13%)	⬆️
sleap/gui/web.py	83.75% <88.88%> (ø)

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