Adding app on gnome menu

create myapp.desktop file

nano ~/.local/share/applications/myapp.desktop

Write all the configurations

[Desktop Entry]
Version=1.0
Name=MyApp
Comment=This is my custom app
Exec=/path/to/your/binary
Icon=/path/to/your/icon.png
Terminal=false
Type=Application
Categories=Utility;Application;

• Version: (Optional) Specifies the version of the desktop entry format.
• Name: The name of your application that will appear in the GNOME menu.
• Comment: A short description of your app.
• Exec: The command that will run your application. Use the full path to your binary or executable.
• Icon: The path to your application’s icon file.
• Terminal: Whether or not to open the app in a terminal (false for GUI apps).
• Type: Should always be Application for an app.
• Categories: Categories help categorize the app in the menu, such as Utility, Development, Graphics, etc. You can add multiple categories, separated by semicolons.

Reload gtk cache gtk-update-icon-cache