♻️ rewrite dependency injection system

tests/plugins/depends.py

@@ -0,0 +1,23 @@
+from nonebot import on_message
+from nonebot.adapters import Event
+from nonebot.params import Depends
+
+test = on_message()
+test2 = on_message()
+
+runned = False
+
+
+def dependency(event: Event):
+    # test cache
+    global runned
+    assert not runned
+    runned = True
+    return event
+
+
+@test.handle()
+@test2.handle()
+async def handle(x: Event = Depends(dependency)):
+    # test dependency
+    return x