docs: salesforce compliance adjustments

[lukegalbraithrussell]

Summary

Adding a footer with the required info. Pulling it and the navbar into separate files so I can add a github action workflow to update the files in one repo and it propogates to the others

No Google Analytics for now

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.83%. Comparing base (8dcdb22) to head (4a51740).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2083      +/-   ##
==========================================
- Coverage   91.83%   91.83%   -0.01%     
==========================================
  Files          38       38              
  Lines       10264    10263       -1     
  Branches      646      646              
==========================================
- Hits         9426     9425       -1     
  Misses        826      826              
  Partials       12       12              

Flag	Coverage Δ
cli-hooks	95.23% <ø> (ø)
cli-test	95.69% <ø> (ø)
oauth	77.39% <ø> (ø)
socket-mode	58.22% <ø> (ø)
web-api	96.88% <ø> (-0.01%)	⬇️
webhook	96.65% <ø> (ø)

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