Update and rename dev_pull_request_build_and_test.yml to dev_pr.yml

.github/workflows/dev_pr.yml

@@ -1,12 +1,15 @@
-name: "[Pull request][dev] Build and test"
+name: "Pull request to 'dev' branch"
 
 on:
-  pull_request:
+  push:
-    branches: [ "dev" ]
+    branches: 
+    - "dev/**"
+    paths:
+    - 'WatchIt**'
 
 jobs:
   build:
-    name: Build and test
+    name: Dotnet solution build test and unit tests execution
     runs-on: ubuntu-latest
     steps:
     - name: Checkout