add interfaces for route and route collection

src/Interfaces/Routing/IRoute.php

@@ -0,0 +1,12 @@
+<?php namespace SokoWeb\Interfaces\Routing;
+
+interface IRoute
+{
+    public function getId(): string;
+
+    public function getHandler(): array;
+
+    public function generateLink(array $parameters = []): string;
+
+    public function testAgainst(array $path): ?array;
+}

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;
+}

src/Routing/Route.php

@@ -1,6 +1,8 @@
 <?php namespace SokoWeb\Routing;
 
-class Route
+use SokoWeb\Interfaces\Routing\IRoute;
+
+class Route implements IRoute
 {
     private string $id;
 

src/Routing/RouteCollection.php

@@ -1,8 +1,10 @@
 <?php namespace SokoWeb\Routing;
 
 use Closure;
+use SokoWeb\Interfaces\Routing\IRoute;
+use SokoWeb\Interfaces\Routing\IRouteCollection;
 
-class RouteCollection
+class RouteCollection implements IRouteCollection
 {
     private array $routes = [];
 
@@ -32,7 +34,7 @@ class RouteCollection
         array_pop($this->groupStack);
     }
 
-    public function getRoute(string $id): ?Route
+    public function getRoute(string $id): ?IRoute
     {
         if (!isset($this->routes[$id])) {
             return null;