Add docs on how to use snippets

[martintmk]

Confirm the following

• I started this PR by branching from the head of the default branch
• I have targeted the PR to merge into the default branch
• I have included unit tests for the issue/feature
• I have successfully run a local build

cc @peter-csala

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (7cc2ea1) 84.63% compared to head (499b3c8) 84.63%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1604   +/-   ##
=======================================
  Coverage   84.63%   84.63%           
=======================================
  Files         306      306           
  Lines        6820     6820           
  Branches     1044     1044           
=======================================
  Hits         5772     5772           
  Misses        839      839           
  Partials      209      209           

Flag	Coverage Δ
linux	84.63% <ø> (ø)
macos	84.63% <ø> (ø)
windows	84.63% <ø> (ø)

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