build: webpack

[dwmkerr]

Looking good so far:

• [x] Chunk/split source
• [x] Setup source maps
• [x] Setup local watch mode
• [x] Check tests work
• [x] Document commands
• [x] Test bundle
• [x] Test manifest version

[codecov[bot]]

Codecov Report

Merging #14 (c86ae13) into main (e51442e) will decrease coverage by 59.25%. The diff coverage is 36.36%.

:exclamation: Current head c86ae13 differs from pull request most recent head afa9a6d. Consider uploading reports for the commit afa9a6d to get more accurate results

@@             Coverage Diff             @@
##             main      #14       +/-   ##
===========================================
- Coverage   73.07%   13.83%   -59.25%     
===========================================
  Files           1        7        +6     
  Lines          26      253      +227     
  Branches        2        7        +5     
===========================================
+ Hits           19       35       +16     
- Misses          7      214      +207     
- Partials        0        4        +4     

Impacted Files	Coverage Δ
src/content.ts	0.00% <0.00%> (ø)
src/lib/chatgpt-elements.ts	0.00% <0.00%> (ø)
src/lib/xpath.ts	25.92% <0.00%> (ø)
src/options.ts	0.00% <0.00%> (ø)
src/lib/extension.ts	88.88% <88.88%> (ø)
src/lib/configuration.ts	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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