Add keycloak_client_scope and keycloak_authentication_flow modules with example playbooks

The collection was missing modules for managing client scopes and
authentication flows, forcing users to write raw uri calls against
the Keycloak Admin REST API. This adds two new modules that leverage
the existing KeycloakAPI helper methods:

- keycloak_client_scope: create/update/delete client scopes with
  protocol mappers (supports check_mode and diff)
- keycloak_authentication_flow: create/delete authentication flows
  with execution steps, or copy existing flows (supports check_mode
  and diff)

Also adds three example playbooks using the new modules:
- keycloak_client_scope.yml
- keycloak_authentication_flow.yml
- keycloak_realm_client.yml

Made-with: Cursor

playbooks/keycloak_authentication_flow.yml

@@ -0,0 +1,27 @@
+---
+- name: Playbook for Keycloak Authentication Flow Configuration
+  hosts: all
+  vars:
+    keycloak_admin_user: admin
+    keycloak_admin_password: "remembertochangeme"
+    keycloak_url: "http://localhost:8080"
+    keycloak_realm: TestRealm
+  tasks:
+    - name: Create authentication flow with executions
+      middleware_automation.keycloak.keycloak_authentication_flow:
+        auth_keycloak_url: "{{ keycloak_url }}"
+        auth_realm: master
+        auth_username: "{{ keycloak_admin_user }}"
+        auth_password: "{{ keycloak_admin_password }}"
+        realm: "{{ keycloak_realm }}"
+        alias: my-browser-flow
+        description: "Custom browser authentication flow"
+        provider_id: basic-flow
+        executions:
+          - provider_id: auth-cookie
+            requirement: ALTERNATIVE
+          - provider_id: auth-password
+            requirement: REQUIRED
+          - provider_id: auth-otp-form
+            requirement: ALTERNATIVE
+        state: present