refactor: remove forward auth, move module net/http to net/gphttp

internal/net/gphttp/middleware/test_data/middleware_compose.yml

@@ -0,0 +1,25 @@
+theGreatPretender:
+  - use: HideXForwarded
+  - use: ModifyRequest
+    setHeaders:
+      X-Real-IP: 6.6.6.6
+  - use: ModifyResponse
+    hideHeaders:
+      - X-Test3
+      - X-Test4
+
+realIPAuthentik:
+  - use: RedirectHTTP
+  - use: RealIP
+    header: X-Real-IP
+    from:
+      - "127.0.0.0/8"
+      - "192.168.0.0/16"
+      - "172.16.0.0/12"
+    recursive: true
+
+testFakeRealIP:
+  - use: ModifyRequest
+    setHeaders:
+      CF-Connecting-IP: 127.0.0.1
+  - use: CloudflareRealIP