feat(docs): Adds copy-to-clipboard to code samples

[rchowell]

Little PR to tidy up the SQL section and adds a copy-to-clipboard to all code examples.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.94%. Comparing base (6b302af) to head (1944229).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3702      +/-   ##
==========================================
- Coverage   77.94%   77.94%   -0.01%     
==========================================
  Files         725      725              
  Lines       90952    90950       -2     
==========================================
- Hits        70895    70893       -2     
  Misses      20057    20057              

see 5 files with indirect coverage changes