Replace Webpack to Vite (#1023)

* Add vite, typescript and prettier

* Configure vite

* Fix tsconfig error

* Fix manifest json

* Move manifest json to root

* Bug fix

* Move back manifest json to public

vite.config.js

@@ -0,0 +1,44 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import { wasm } from '@rollup/plugin-wasm';
+import { viteStaticCopy } from 'vite-plugin-static-copy';
+
+const copyFiles = {
+  targets: [
+    {
+      src: 'node_modules/@matrix-org/olm/olm.wasm',
+      dest: '',
+    },
+    {
+      src: '_redirects',
+      dest: '',
+    },
+    {
+      src: 'config.json',
+      dest: '',
+    },
+    {
+      src: 'public/res/android',
+      dest: 'public/',
+    }
+  ],
+}
+
+export default defineConfig({
+  appType: 'spa',
+  publicDir: false,
+  server: {
+    port: 8080,
+    host: true,
+  },
+  plugins: [
+    viteStaticCopy(copyFiles),
+    wasm(),
+    react(),
+  ],
+  build: {
+    outDir: 'dist',
+    sourcemap: true,
+    copyPublicDir: false,
+  },
+});