add new method for Router (#1117)

* add new method for Router

* add type hint, tests, changes file

* update tests

* Update aiogram/dispatcher/router.py

* Update tests/test_dispatcher/test_router.py

* Update router.py

---------

Co-authored-by: Alex Root Junior <jroot.junior@gmail.com>

CHANGES/1117.feature.rst

@@ -0,0 +1 @@
+Added a method that allows you to compactly register routers

aiogram/dispatcher/router.py

@@ -179,6 +179,12 @@ class Router:
         self._parent_router = router
         router.sub_routers.append(self)
 
+    def include_routers(self, *routers: Router) -> None:
+        if not routers:
+            raise ValueError("At least one router must be provided")
+        for router in routers:
+            self.include_router(router)
+
     def include_router(self, router: Router) -> Router:
         """
         Attach another router.

tests/test_dispatcher/test_router.py

@@ -33,6 +33,20 @@ class TestRouter:
         assert router3.parent_router is router2
         assert router3.sub_routers == []
 
+    def test_including_many_routers(self):
+        router = Router()
+        router1 = Router()
+        router2 = Router()
+
+        router.include_routers(router1, router2)
+
+        assert router.sub_routers == [router1, router2]
+
+    def test_including_many_routers_bad_type(self):
+        router = Router()
+        with pytest.raises(ValueError, match="At least one router must be provided"):
+            router.include_routers()
+
     def test_include_router_by_string_bad_type(self):
         router = Router()
         with pytest.raises(ValueError, match=r"router should be instance of Router"):