Added server build mode for webpack

ReallifeGamemode.Client/webpack.config.build.js

@@ -0,0 +1,30 @@
+const path = require('path');
+
+module.exports = {
+    mode: 'production',
+    entry: './index.ts',
+    output: {
+        path: path.resolve(__dirname),
+        filename: 'index.js'
+    },
+    module: {
+        rules: [
+            {
+                test: /\.js$/,
+                use: { loader: 'babel-loader' }
+            },
+            {
+                test: /\.ts$/,
+                use: {
+                    loader: 'ts-loader',
+                    options: {
+                        allowTsInNodeModules: true
+                    }
+                }
+            }
+        ]
+    },
+    resolve: {
+        extensions: ['.ts', '.js', '.json']
+    }
+};