Fix eslint warning in *Hard coded local username/password* template of create-react-admin

[hbendev]

Ignore @typescript-eslint scoped rule for local auth provider template file.

[hbendev]

Hi! Thanks for the framework! When using the create-react-admin CLI, and selecting Hard coded local username/password option this generated line is marked as an error by ESLint if the configuration extends "plugin:@typescript-eslint/recommended".

If you see any value in these, I'm happy to

1. Address this extra additional disabled rule in other template files.
2. Change the default generated ESLint configuration to extend upon the @typescript-eslint/recommended values.

[djhi]

Thanks!