add interfaces for route and route collection

src/Interfaces/Routing/IRouteCollection.php

@@ -0,0 +1,16 @@
+<?php namespace SokoWeb\Interfaces\Routing;
+
+use Closure;
+
+interface IRouteCollection
+{
+    public function get(string $id, string $pattern, array $handler): void;
+
+    public function post(string $id, string $pattern, array $handler): void;
+
+    public function group(string $pattern, Closure $group): void;
+
+    public function getRoute(string $id): ?IRoute;
+
+    public function match(string $method, string $uri): ?array;
+}