Two issues made this class unusable on other platforms:
- Hardcoded /res paths to icons
- It required a GUI::TreeView for palette access
This patch simply patches out those features on non-Serenity systemsf
for now.
Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).
No functional changes.
