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>

jest.config.js

@@ -0,0 +1,15 @@
+module.exports = {
+  testEnvironment: 'jsdom',
+  preset: 'ts-jest/presets/js-with-ts',
+  transform: {
+    '^.+\\.(ts|tsx)?$': 'ts-jest',
+    "^.+\\.(js|jsx)$": "babel-jest",
+  },
+  transformIgnorePatterns: [
+    "//node_modules/(?!(allotment|@tauri-apps/api)/)",
+  ],
+  moduleNameMapper: {
+    '^allotment$': 'allotment/dist/legacy',
+  },
+  setupFilesAfterEnv: ['./src/setupTests.ts'],
+}