Orbital improvements

This tracking issue will cover the future Orbital desktop environment improvements.

• Serialize the Orbital settings to a TOML file (Orbital should watch for variable changes on this configuration file)
• Mimic the COSMIC Desktop top bar and dock design in the launcher
• Spawn two panels, one for the top panel and other for the dock
• Add a variable option to change the dock size
• Add a variable option to hide the window title bar if its maximized
• Add a variable option to change the Orbital wallpaper (use the image path)
• Add a variable option to change the top bar position (top, bottom, left, right)
• Add a variable option to change the dock position (top, bottom, left, right)
• Add a variable option to change the keyboard map (use ISO codes)
• Add a variable option to allow the dock to hide
• Add a variable option to disable the dock
• Add a variable option to disable the top bar (move all indicators and buttons to the end of the dock, like KDE Plasma does)
• Add a variable options to change the keyboard shortcuts
• Add a button in the dock to minimize all windows
• Add an top bar indicator to show the volume settings
• Add a way to mute the sound each program in the "Sound" indicator
• Add a top bar indicator button to disable/enable the Internet
• Add a "Restart" button on the App Menu and Login Manager
• Add a "Shutdown" button on the App Menu and Login Manager
• Add a "Lock Session" button on the App Menu
• Add a variable option to change the orblogin wallpaper
• Add a variable option to change the key repeat speed
• Add a variable option to change the mouse cursor speed
• Add a variable option to change the "running program" indicator color on the dock
• Add a variable option to change the top bar color (use color codes)
• Add a variable option to change the dock color (use color codes)
• Add a variable option to change the window title bar color
• Add a variable option to add a gap around the top bar (the edges will be rounded)
• Allow the reordering of pinned programs with mouse on the dock
• Port COSMIC Settings