WIP: add new parameter working-directory to the target, group and global scope

[abhijeetSaroha]

Changes Made:

• Modified the _call_shell_app and _load_working_directory methods to address the working directory issue.

Details:

• Refactored the _call_shell_app method to dynamically set the working directory based on the target, group, or global scope.

• Updated the _load_working_directory method to handle both absolute and relative paths appropriately.

• The _call_shell_app method now utilizes the correct working directory based on the priority of target, group, and global settings.

• The _load_working_directory method has been improved to handle various scenarios for setting the working directory.

Solves: #48