Add prod config for the wallet

When supplying `production` as the mode in the config for webpack, it complains about an unmet dependency issue with fav-icons. Then trying to supply a favicon.ico, returns a mimetype error. By using a png in alignment to the .ico. It builds. Tested on Linux.

nym-wallet/package.json

@@ -6,10 +6,11 @@
   "scripts": {
     "webpack:dev": "yarn webpack serve",
     "webpack:build": "yarn webpack",
+    "webpack:prod": "yarn webpack --progress --config webpack.prod.config.js",
     "tauri:dev": "yarn tauri dev",
     "tauri:build": "yarn tauri build",
-    "dev": "yarn run webpack:dev & yarn run tauri:dev",
-    "build": "yarn run webpack:build & yarn run tauri:build"
+    "dev": "yarn run-s webpack:dev tauri:dev",
+    "build:prod": "run-s webpack:prodbuild tauri:build"
   },
   "dependencies": {
     "@babel/preset-typescript": "^7.15.0",
@@ -44,9 +45,11 @@
     "@types/semver": "^7.3.8",
     "babel-loader": "^8.2.2",
     "css-loader": "^6.2.0",
+    "favicons": "^6.2.2",
     "favicons-webpack-plugin": "^5.0.2",
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^5.3.2",
+    "npm-run-all": "^4.1.5",
     "style-loader": "^3.2.1",
     "url-loader": "^4.1.1",
     "webpack": "^5.64.3",

nym-wallet/webpack.prod.config.js

@@ -0,0 +1,42 @@
+const HtmlWebpackPlugin = require('html-webpack-plugin')
+const FaviconsWebpackPlugin = require('favicons-webpack-plugin')
+var path = require('path')
+
+module.exports = {
+  mode: 'production',
+  node: {
+    __dirname: false
+  },
+  entry: path.resolve(__dirname, '/src/index'),
+  plugins: [
+    new HtmlWebpackPlugin({
+      template: path.resolve(__dirname, 'public/index.html'),
+      filename: 'index.html',
+    }),
+    new FaviconsWebpackPlugin(path.resolve(__dirname, 'public/favicon.png')),
+  ],
+  module: {
+    rules: [
+      {
+        test: /\.(ts|tsx)$/,
+        exclude: /node_modules/,
+        use: ['babel-loader'],
+      },
+      {
+        test: /\.css$/i,
+        use: ['style-loader', 'css-loader'],
+      },
+      {
+        test: /\.(png|jpe?g|gif|svg)$/i,
+        use: [
+          {
+            loader: 'file-loader',
+          },
+        ],
+      },
+    ],
+  },
+  resolve: {
+    extensions: ['*', '.js', '.jsx', '.ts', '.tsx'],
+  },
+}