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.
