(build) Update GRM config

To include updating of closed issues, and adding SHA of artifacts to
release.

GitReleaseManager.yaml

@@ -14,3 +14,18 @@ issue-labels-alias:
     - name:    security
       header:  Security
       plural:  Security
+create:
+    include-sha-section: true
+    sha-section-heading: "SHA256 Hashes of the release artifacts"
+    sha-section-line-format: "- `{1}\t{0}`"
+close:
+  use-issue-comments: true
+  issue-comment: |-
+    :tada: This issue has been resolved in version {milestone} :tada:
+
+    The release is available on:
+
+    - [GitHub Release](https://github.com/{owner}/{repository}/releases/tag/{milestone})
+    - [VSCode Marketplace](https://marketplace.visualstudio.com/items?itemName=cake-build.cake-vscode)
+
+    Your **[GitReleaseManager](https://github.com/GitTools/GitReleaseManager)** bot :package::rocket: