Add xterm itegration

* Move to TypeScript from legacy JavaScript
* Add support of xterm.js
* Hterm is still available for backward compatibility

js/webpack.config.js

@@ -0,0 +1,23 @@
+module.exports = {
+    entry: "./src/main.ts",
+    output: {
+        filename: "./dist/bundle.js"
+    },
+    externals: {
+        "hterm": "hterm",
+        "htermLib": "lib"
+    },
+    devtool: "source-map",
+    resolve: {
+        extensions: [".ts", ".tsx", ".js"],
+    },
+    module: {
+        rules: [
+            {
+                test: /\.tsx?$/,
+                loader: "ts-loader",
+                exclude: [/node_modules/],
+            }
+        ]
+    }
+};