Feature/improve build (#9)

buildSrc/src/org.jdrupes.vmoperator.versioning-conventions.gradle

@@ -0,0 +1,28 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This project uses @Incubating APIs which are subject to change.
+ */
+
+plugins {
+    // Required by axion-release
+    id 'org.ajoberstar.grgit'
+    // Git based versioning
+    id 'pl.allegro.tech.build.axion-release'
+}
+
+scmVersion {
+    versionIncrementer 'incrementMinor'
+    tag {
+        def shortened = project.name.startsWith(project.group + ".") ?
+            project.name.substring(project.group.length() + 1) : project.name
+        var p = shortened.replace('.', '-') + "-"
+        if (grgit.branch.current.name != "main"
+            && !grgit.branch.current.name.startsWith("release")) {
+            p = p + grgit.branch.current.name.replace('/', '-') + "-"
+        }
+        prefix = p
+    }
+}
+version = scmVersion.version
+ext.isSnapshot = version.endsWith('-SNAPSHOT')