Add mounting for activated routes, route compiling, routing

src/http/routing/ActivatedRoute.ts

@@ -0,0 +1,23 @@
+import {ErrorWithContext} from "@extollo/util";
+import {Route} from "./Route";
+
+export class ActivatedRoute {
+    public readonly params: {[key: string]: string}
+
+    constructor(
+        public readonly route: Route,
+        public readonly path: string
+    ) {
+        const params = route.extract(path)
+        if ( !params ) {
+            const error = new ErrorWithContext('Cannot get params for route. Path does not match.')
+            error.context = {
+                matchedRoute: String(route),
+                requestPath: path,
+            }
+            throw error
+        }
+
+        this.params = params
+    }
+}