chore: apply review suggestions

* pref: optimize `common` rules and matchers
* chore: rename diagrams services to short form
* chore: sort imports

packages/parser/src/language/common/index.ts

@@ -1,2 +1,3 @@
-export * from './commonLexer.js';
-export * from './commonValueConverters.js';
+export * from './lexer.js';
+export * from './tokenBuilder.js';
+export { MermaidValueConverter } from './valueConverter.js';