Feature/4401 creating langium parser git graph

packages/mermaid/src/diagrams/git/gitGraphDiagram.ts

@@ -1,13 +1,13 @@
 // @ts-ignore: JISON doesn't support types
-import gitGraphParser from './parser/gitGraph.jison';
-import gitGraphDb from './gitGraphAst.js';
+import { parser } from './gitGraphParser.js';
+import { db } from './gitGraphAst.js';
 import gitGraphRenderer from './gitGraphRenderer.js';
 import gitGraphStyles from './styles.js';
 import type { DiagramDefinition } from '../../diagram-api/types.js';
 
 export const diagram: DiagramDefinition = {
-  parser: gitGraphParser,
-  db: gitGraphDb,
+  parser,
+  db,
   renderer: gitGraphRenderer,
   styles: gitGraphStyles,
 };