This pull request introduces a new Applications widget that displays a
user-defined list of application launchers in the UI. Each app entry
supports an icon, a label, and executes its configured command on click.
The design of this widget is inspired by the Applications Widget of YASB
Reborn. I personally missed this functionality and aimed to bring a
similar experience to komorebi-bar.
Further information is in the text of PR #1415
This commit adds a new komorebi widget to indicate whether or not the
focused container is locked.
This commit also includes an icon colour change on the layer and layout
widgets to the accent colour.
The commit also renames the locked_window widget to locked_container as
it is more suitable.
PR: #1394
