Add release script

.gitignore

+out/
 # ---> Maven
 target/
 pom.xml.tag

scripts/release-minor-version.sh

+#!/bin/bash
+
+set -e
+
+# Change directory to the root of the project
+cd "$(dirname "${BASH_SOURCE[0]}")/../"
+
+if [ "$(git rev-parse --abbrev-ref HEAD)" != "main" ]
+then
+   echo "[ERROR] Not on main branch"
+   exit 1
+fi
+
+if [ -n "$(git status --porcelain)" ]
+then
+    echo "[ERROR] Working directory is not clean"
+    exit 1
+fi
+
+MAVEN_VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
+if [[ ! "$MAVEN_VERSION" =~ -SNAPSHOT$ ]]
+then
+    echo "[ERROR] Version should end with -SNAPSHOT"
+    exit 1
+fi
+
+prompt_yes_no() {
+  read -p "$1 (y/n) " -n 1 -r
+  echo
+  [[ $REPLY =~ ^[Yy]$ ]] || exit 1
+}
+
+NUMERIC_VERSION=$(echo "$MAVEN_VERSION" | cut -d'-' -f1)
+MAJOR=$(echo "$NUMERIC_VERSION" | cut -d '.' -f 1)
+MINOR=$(echo "$NUMERIC_VERSION" | cut -d '.' -f 2)
+PATCH=$(echo "$NUMERIC_VERSION" | cut -d '.' -f 3)
+
+CURRENT_VERSION="$MAJOR.$MINOR.$PATCH"
+NEW_VERSION="$MAJOR.$((MINOR + 1)).0"
+NEW_SNAPSHOT_VERSION="$NEW_VERSION-SNAPSHOT"
+prompt_yes_no "Tag $CURRENT_VERSION and bump version from $MAVEN_VERSION to $NEW_SNAPSHOT_VERSION?"
+
+git tag -m "Release version $CURRENT_VERSION" "$CURRENT_VERSION"
+mvn versions:set -DnewVersion="$NEW_SNAPSHOT_VERSION" -DgenerateBackupPoms=false
+git add -u
+git commit -m "Start development of $NEW_VERSION"
+
+prompt_yes_no "git push origin main $CURRENT_VERSION?"
+git push origin main "$CURRENT_VERSION"
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