breaking: rm unused *-compound-* properties from CSSNode

[bartveneman]

closes #112

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.87%. Comparing base (9ab5163) to head (a86442a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #115      +/-   ##
==========================================
- Coverage   94.97%   94.87%   -0.11%     
==========================================
  Files          15       15              
  Lines        2607     2556      -51     
  Branches      680      665      -15     
==========================================
- Hits         2476     2425      -51     
  Misses        131      131              

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[codecov-commenter]

Bundle Report

Changes will decrease total bundle size by 2.25kB (-1.6%) ⬇️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
@projectwallace/css-parser-esm	138.86kB	-2.25kB (-1.6%) ⬇️

Affected Assets, Files, and Routes:

view changes for bundle: @projectwallace/css-parser-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
css-*.js	-2.25kB	14.93kB	-13.1%

Files in css-*.js:

• ./src/css-node.ts → Total Size: 14.07kB