Migrate from CRA to Vite (#170)

* Basic CRA to Vite conversion

* Restore ESLint support

* Remove semicolons from vite config

* Add vite client types to tsconfig

* Migrate to Vitest for testing (not working on Mac)

* some test progress (#175)

* some test progress

* something maybe working

* remove local lib

* small clean up

* tweaks

* fix dependency

* clean up deps

* remove vitest import

* vitest config is needed even though we're not using vitest

* more tweaks to vite config

---------

Co-authored-by: Kurt Hutten <k.hutten@protonmail.ch>

src/lang/tokeniser.test.ts

@@ -318,7 +318,7 @@ const yo = 6`)
       "number       '6'        from 46  to 47",
     ])
   })
-  it('testing tokenising line comments', () => {
+  it('testing tokenising line comments by itself', () => {
     const result = stringSummaryLexer(`log('hi')
 // comment on a line by itself
 const yo=45`)