Add script for starting a prerelease

Author: brophdawg11

scripts/start-prerelease.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+set -x
+set -e
+
+if [[ -n $(git status --porcelain) ]]; then
+  echo "Error: Your git working directory is not clean. Please commit or stash your changes."
+  exit 1
+fi
+
+git checkout main
+git pull
+git checkout dev
+git pull
+git checkout -b release-next
+git merge main --no-edit
+pnpm changeset pre enter pre
+git add .changeset/pre.json
+git commit -m "Enter prerelease mode"
+git push --set-upstream origin release-next
+
+set +e
+set +x