[Build] Add workflows for automatic releases

buildSrc/src/main/groovy/tool/UpVersion.groovy

@@ -0,0 +1,33 @@
+package tool
+
+import groovy.transform.CompileStatic
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.Internal
+import org.gradle.api.tasks.TaskAction
+
+@CompileStatic
+class UpVersion extends DefaultTask {
+    @Internal
+    String group = 'build'
+    @Internal
+    String description = 'Up project version to the next one.'
+
+    private final String currentVersion = project.findProperty('version')
+    private final String nextVersion = project.findProperty('next')
+
+    @TaskAction
+    void up() {
+        if (!currentVersion) {
+            throw new IllegalArgumentException('No property was found: "version"')
+        }
+        if (!nextVersion) {
+            throw new IllegalArgumentException('No property was found: "next"')
+        }
+
+        def propsFile = project.file('gradle.properties')
+        propsFile.text = propsFile.text.replace("version=$currentVersion", "version=$nextVersion")
+
+        def readmeFile = project.file('README.md')
+        readmeFile.text = readmeFile.text.replace(currentVersion, nextVersion)
+    }
+}