Add regexes for release-notes github reference swapping (#2519)

.github/release/release-notes-regexes.md

@@ -0,0 +1,15 @@
+## PR link
+Find: `in https\:\/\/github\.com\/VirtusLab\/scala\-cli\/pull\/(.*?)$` </br>
+Replace: `in [#$1](https://github.com/VirtusLab/scala-cli/pull/$1)`
+
+## Contributor link
+Find: `by @(.*?) in` </br>
+Replace: `by [@$1](https://github.com/$1) in`
+
+## New contributor link
+Find: `@(.*?) made` </br>
+Replace: `[@$1](https://github.com/$1) made`
+
+## No GH contributor link
+Find: `by \[@(.*?).\(.*\) in` </br>
+Replace: `by @$1 in`

.github/release/release-procedure.md

@@ -11,6 +11,7 @@
   create a PR.
     - [ ] Make sure the notes render correctly on [the website](https://scala-cli.virtuslab.org/docs/release_notes) - that
       includes swapping out GitHub-idiomatic @mentions of users, links to PRs, issues, etc.
+      When using IntelliJ you can do that using the regexes in [release-notes-regexes.md](release-notes-regexes.md).
     - [ ] Copy any fixes over to the draft after getting the PR reviewed and merged.
 - [ ] Mark the release draft as `pre-release` and then `Publish Release`
 - [ ] Wait for a green release CI build with all the updated versions.