feat: add sqlstring and supports-color modules

- Introduced sqlstring module for SQL escape and formatting.
- Added supports-color module to detect terminal color support.
- Created dashboard and login views with Bootstrap styling.
- Implemented user schema in SQL with mock data for testing.

backend/node_modules/mysql2/typings/mysql/info.txt

@@ -0,0 +1 @@
+temporary workaround, see https://github.com/sidorares/node-mysql2/issues/1210