Add wasm build support

[JohnnyMorganz]

Ref: #193 for playground, and potentially update the extension to support this too
TODO: need to add in publish support to CI, but I intend to overhaul the release action anyways

[codecov]

Codecov Report

Merging #468 (1282c4a) into master (27c97ca) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #468   +/-   ##
=======================================
  Coverage   97.42%   97.43%           
=======================================
  Files          14       14           
  Lines        4969     4985   +16     
=======================================
+ Hits         4841     4857   +16     
  Misses        128      128           

Impacted Files	Coverage Δ
src/lib.rs	96.27% <ø> (ø)
src/formatters/expression.rs	97.09% <0.00%> (+0.06%)	⬆️

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