🚨🦀 Setup Rust -> WASM 🦀🚨 (#28)

* initial tokeniser to wasm port

* fix tests

* add wasm to build script

* add rust tools to test action

* tweaks

* maybe tests will be happy

* tweak simple server

* trying to get tests to pass

* it pget vercel to build

* tidy up

* clean up rust files

* change lexer to use recursion so that it's consistent with the rest of the interpreter

* clean up nokeniser further

* rename variables

* readme typos

* run rust tests in CI

* follow clippy's advice

* more clippy clean up

* setup up proper serialzation to js-land

* tidy init promise in tests

src/lang/getNodePathFromSourceRange.test.ts

@@ -1,6 +1,9 @@
 import { getNodePathFromSourceRange } from './abstractSyntaxTree'
 import { lexer } from './tokeniser'
 import { abstractSyntaxTree, getNodeFromPath } from './abstractSyntaxTree'
+import { initPromise } from './rust'
+
+beforeAll(() => initPromise)
 
 describe('testing getNodePathFromSourceRange', () => {
   it('test it gets the right path for a `lineTo` CallExpression within a SketchExpression', () => {