Added Traffic split annotations (#215)

* Added Traffic split annotations

* traffic split - blueGreen deployment

* traffic split - canary deployment

* Traffic split annotations - canary deployment

* updated Readme and action.yml

* Traffic split - canary deployment

* clean code

* Clean code

* Clean code

* Create annotation object

* Updated Readme and action.yml

* Spelling correction

Co-authored-by: Vidya Reddy <vidyareddy@microsoft.com>

src/types/annotations.ts

@@ -0,0 +1,8 @@
+export function parseAnnotations(str: string) {
+   if (str == '') {
+      return {}
+   } else {
+      const annotaion = JSON.parse(str)
+      return new Map(annotaion)
+   }
+}