Fix code related to changing from temporary playlists to permanent ones.
Implement new centralized Koto Paths for defining our variables and revdns name for consistency.
Updated Album View to leverage KotoCoverArtButton component.
Started refactoring our theming to support multiple variants. It isn't where I want it yet but we'll get there.
This database will be stored in the user's XDG_DATA_HOME directory under a folder called `com.github.joshstrobl.koto`.
Refactored Koto Track Listing into a dedicated Disc View component, break apart out CDs / Discs into relevant Disc View components, sorting them by the disc and showing a label if there are more than one discs / CDs.
Started using the row-activated event for our Artist GtkListBox instead of having press events on the artist buttons. Makes switching between artists far more reliable. Added a slide left / right stack animation and set its animation to 400ms so it's in the goldilocks zone (IMO) of not being too fast or too slow.
Fix a warning related to scale factor fetching in the PlayerBar.
