chore: Refactor release scripts to create branch and tags

scripts/release-branch.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# file: release-branch.sh
+# description: Prepare a release branch from develop to master.
+
+## Build release context as environment variables.
+GIT_BRANCH=$(git symbolic-ref --short HEAD)
+
+## TODO: get package version from pyproject.toml
+CURRENT_VERSION=v2.2.0
+## TODO: get new package version e.g. minor, major, bugfix
+NEW_VERSION=v2.3.0
+
+## TODO: ensure you're on the develop branch else fail
+if [[ "${GIT_BRANCH}" != "develop" ]]; then
+	echo 'Please switch to to the develop branch to create a release branch.'
+	exit 0
+fi
+
+## Create release branch
+git checkout -b "release/${NEW_VERSION}" develop
+
+## TODO: bump package version in pyproject.toml
+## TODO: commit changes to pyproject.toml
+## TODO: generate new CHANGELOG entry from commits
+## TODO: commit changes to CHANGELOG
+
+## Return to develop
+git checkout develop
+
+if [[ -z "${CI}" ]]; then
+	echo "Please confirm the release branch is correct."
+	read -p "Press enter to continue"
+	echo
+fi
+
+## Push branch and tags
+git push origin "release/${NEW_VERSION}"
+
+## TODO: create PR for review