The GetPath method for GitLabItem produced an incorrect path when an addon's base path in the repository was empty. This was caused by an off-by-one error in the string slicing logic that always assumed a base path separator existed, incorrectly truncating the first character of the file path.
This commit corrects the logic by adding a check for an empty base path, ensuring the full path is returned in that case.
Fixes#6899
Signed-off-by: Ashvin Bambhaniya <ashvin.bambhaniya@improwised.com>