Add simple GTK GUI for ls command

[rkarahan80]

This commit introduces a basic graphical user interface (GUI) for the ls command, built using GTK4.

The GUI allows users to:

• Specify a directory path in a text entry field.
• Click a button to list the contents of the specified directory.
• View the output of ls -l in a text area.

Includes:

• gui/ls_gui.c: The C source code for the GTK application.
• gui/ls_gui.ui: The Glade UI definition file.
• gui/Makefile: Makefile for building the GUI application.
• gui/test_ls_gui.sh: A basic test script to check if the GUI launches.

The application can be compiled by navigating to the gui directory and running make. The test script can be run from the root directory using DISPLAY=:0 gui/test_ls_gui.sh after building the GUI.

Signed-off-by: Recep Karahan [email protected]

[github-actions[bot]]

Thank you for taking the time to contribute to FreeBSD! There are a few issues that need to be fixed:

• Missing Signed-off-by lines^{db3eaf1b9e2636cd5ff0fbe7ec21109dc09a4eee}
• Real email address is needed^{db3eaf1b9e2636cd5ff0fbe7ec21109dc09a4eee, 31cec753dbedf216237f1f3249a1a2f253582c19}

[asomers]

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