Azure pipelines public project pr pipeline

* Setup for fork push pipeline

* adding CI and PR trigger

* Delete azure-pipelines-build-auto.yml

azure-pipelines-fork-build-push.yml

@@ -1,11 +1,15 @@
-#Pipeline to run automatically when changes are pushed to master
-
 trigger:
   batch: true
   branches:
     include:
     - master
-    
+
+pr:
+  autoCancel: true
+  branches:
+    include:
+    - master
+
 jobs:
 
   - job: BuildTest