New syntax highlighter

[m0hanraj]

• Adds new syntax highlighter
• Default copy to clipboard
• WP 6.6 compatiblity
• Snack bar message styling fixes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.67%. Comparing base (c5abc1a) to head (d3e9a20).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #172   +/-   ##
=========================================
  Coverage     81.67%   81.67%           
  Complexity       24       24           
=========================================
  Files            17       17           
  Lines           191      191           
  Branches          9        9           
=========================================
  Hits            156      156           
  Misses           27       27           
  Partials          8        8           

Flag	Coverage Δ
integrationtests	96.29% <ø> (ø)
jstests	70.90% <100.00%> (ø)
unittests	33.33% <ø> (ø)

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