Add missing typing for extracted Rails patch

Author: Strech

sig/datadog/appsec/contrib/rails/patcher.rbs

@@ -19,12 +19,6 @@ module Datadog
 
           def self?.add_middleware: (untyped app) -> untyped
 
-          module ProcessActionPatch
-            def process_action: (*untyped args) -> untyped
-          end
-
-          def self?.patch_process_action: () -> untyped
-
           def self?.include_middleware?: (untyped middleware, untyped app) -> untyped
 
           def self?.inspect_middlewares: (untyped app) -> untyped

sig/datadog/appsec/contrib/rails/patches/process_action_patch.rbs

@@ -0,0 +1,13 @@
+module Datadog
+  module AppSec
+    module Contrib
+      module Rails
+        module Patches
+          module ProcessActionPatch
+            def process_action: (*untyped args) -> untyped
+          end
+        end
+      end
+    end
+  end
+end