chore: update .gitignore to include mcp.json file

Author: ff6347

.gitignore

@@ -282,4 +282,5 @@ sql/trees_trees_2022-11-09T12-28-18.sql
 sql/trees_bezirk_mitte_table_2022-11-08T16-32-58.sql
 sql/*.dump
 # user specific cursor rules
-.cursor/rules/*
+.cursor/rules/*
+.cursor/mcp.json