[Feature Request]: Ability to change the show apps icon to custom/distro icon

[n3thshan]

Problem

Currently the Show Applications icon is not customizable

Proposed Solution

Add an option in the 'Appearance' or the 'Launchers' tab to allow selecting custom icons as well as some distro logos (both coloured and monochrome) already included (like in the extension 'Logo Menu') for the Show Applications button.

Benefits and Impact

This will allow distro maintainers to give identity to their GNOME-based distro without relying on the 'Logo Menu' extension and also make the dock look nicer especially in the extended panel mode just like the Ubuntu Dock as of version 24.10.