Add appplatform CI. (Azure#13176)

Author: mitchdenny

sdk/appplatform/ci.yml

@@ -0,0 +1,33 @@
+# DO NOT EDIT THIS FILE
+# This file is generated automatically and any changes will be lost.
+
+trigger:
+  branches:
+    include:
+    - master
+    - hotfix/*
+    - release/*
+    - restapi*
+  paths:
+    include:
+    - sdk/appplatform/
+
+pr:
+  branches:
+    include:
+    - master
+    - feature/*
+    - hotfix/*
+    - release/*
+    - restapi*
+  paths:
+    include:
+    - sdk/appplatform/
+
+extends:
+  template: ../../eng/pipelines/templates/stages/archetype-sdk-client.yml
+  parameters:
+    ServiceDirectory: appplatform
+    Artifacts:
+    - name: azure_mgmt_appplatform
+      safeName: azuremgmtappplatform