Seup chronicler for Github actions. (#431)

* Seup chronicler for Github actions,

* Update the file type

.github/workflows/main.workflow

@@ -0,0 +1,9 @@
+workflow "Add PR to release notes" {
+  on = "pull_request"
+  resolves = ["Chronicler"]
+}
+
+action "Chronicler" {
+  uses = "crosscompile/chronicler-action@v1.0.0"
+  secrets = ["GITHUB_TOKEN"]
+}