Add Release Scripts

- wait-for-done is a handy script for periodically checking
Maven for the release

- release-notes-sections is handy for working with Spring Boot
Changelog

scripts/release/release-notes-sections.yml

@@ -0,0 +1,17 @@
+changelog:
+  issues:
+    exclude:
+      labels: ["duplicate", "invalid", "declined"]
+  sections:
+    - title: "New Features"
+      emoji: ":star:"
+      labels: ["enhancement"]
+    - title: "Bug Fixes"
+      emoji: ":beetle:"
+      labels: ["bug", "regression"]
+    - title: "Dependency Upgrades"
+      emoji: ":hammer:"
+      labels: ["dependency-upgrade"]
+    - title: "Non-passive"
+      emoji: ":rewind:"
+      labels: ["breaks-passivity"]