Add public build yml file

Author: kamperiadis

eng/ci/public-build.yml

@@ -0,0 +1,28 @@
+trigger:
+  batch: true
+  branches:
+    include:
+    - dev
+
+pr:
+  branches:
+    include:
+    - dev
+
+resources:
+  repositories:
+  - repository: 1es
+    type: git
+    name: 1ESPipelineTemplates/1ESPipelineTemplates
+    ref: refs/tags/release
+
+variables:
+  - template: /eng/ci/templates/variables/build.yml@self
+
+extends:
+  template: v1/1ES.Unofficial.PipelineTemplate.yml@1es
+  parameters:
+    pool:
+      name: 1es-pool-azfunc-public
+      image: 1es-windows-2022
+      os: windows