Makefile changes Bugfix

[Online122228]

had an error when compiling that /opt/NUSGet cannot be found and therefore not be deleted. i fixed this by changing the rm -rd /opt/NUSGet line to rm -rf /opt/NUSGet since -f forces the deletion even if the file or directory does not exist and -r already includes the functionality of -d.
Furthermore i added an option to uninstall the program by running sudo make uninstall

[Copilot]

Pull request overview

This PR fixes a Makefile compilation error and adds an uninstall target. The original issue occurred when /opt/NUSGet didn't exist during installation, causing rm -rd to fail. The fix changes the flag to -rf, which forces deletion even if the directory doesn't exist.

Changes:

• Fixed rm -rd to rm -rf in the install target to prevent errors when the directory doesn't exist
• Added a new uninstall target to remove installed files and directories

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[Copilot]

The uninstall target should use the -f flag with the rm command for consistency with line 17 and to prevent errors if the file doesn't exist. This follows the same reasoning as the fix applied to line 9.

Suggested change

	rm /usr/share/applications/NUSGet.desktop
	rm -f /usr/share/applications/NUSGet.desktop

[Online122228]

you only uninstall an installed package, so the file is definetly there

[Copilot]

For consistency with line 9, consider adding a trailing slash to the directory path. While both forms work, consistent formatting improves maintainability.

Suggested change

	rm -rf /opt/NUSGet
	rm -rf /opt/NUSGet/