feat: finish multi lnaguage support

src/server/code-parse/language/java/codecrumbs.js

@@ -0,0 +1,9 @@
+const { setupGetCrumbs, setupdGetCommentsFromCode } = require('../default/codecrumbs');
+
+const JAVA_COMMENT_REGEX = /^([^\/\/]*)\/\/(.*)$/;
+const getCrumbs = setupGetCrumbs(setupdGetCommentsFromCode(JAVA_COMMENT_REGEX));
+
+// replace with own implementation if needed
+module.exports = {
+  getCrumbs
+};