Update sv_boss.lua, cl_boss.lua

[nitayStain]

Describe Pull request
I followed a suggestion in the issues, I created a feature in which the employee menu, the boss will have the access to toggle the employee's duty, on or off.
I added a simple icon in the option itself and in the title of the menu, a notice for the boss to see if the player is even in duty or not.

#115

Questions (please complete the following information):

• Have you personally loaded this code into an updated qbcore project and checked all it's functionality? [yes/no] (Be honest)
• Does your code fit the style guidelines? [yes/no]
• Does your PR fit the contribution guidelines? [yes/no]

[MatFirdaus33]

icon = data.player.onduty and 'fa-solid fa-toggle-off' or 'fa-solid fa-toggle-on',

[github-actions]

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