feat(wit-smith): add wit-smith for `include with` syntax#1057

Draft

Mossaka wants to merge 16 commits intobytecodealliance:mainfrom Mossaka:union-wit-parser-smith

+1,036-202

Commits on Jun 1, 2023

Merge remote-tracking branch 'upstream/main' into union-wit-parser-2
Mossaka
committed

Commits on Jun 2, 2023

resolved some comments
Mossaka
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Implemented wit-smith to do fuzz tests. Did not finish the include with part because the current impl has
Mossaka
committed