Add favorite limit settings

crates/ely_domain/src/favorite.rs

@@ -0,0 +1,38 @@
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
+pub enum FavoriteLimit {
+    Six,
+    #[default]
+    Twelve,
+    TwentyFour,
+}
+
+impl FavoriteLimit {
+    pub const ALL: &[Self] = &[Self::Six, Self::Twelve, Self::TwentyFour];
+
+    #[must_use]
+    pub fn value(self) -> usize {
+        match self {
+            Self::Six => 6,
+            Self::Twelve => 12,
+            Self::TwentyFour => 24,
+        }
+    }
+
+    #[must_use]
+    pub fn label(self) -> &'static str {
+        match self {
+            Self::Six => "6 Favorites",
+            Self::Twelve => "12 Favorites",
+            Self::TwentyFour => "24 Favorites",
+        }
+    }
+
+    #[must_use]
+    pub fn detail(self) -> &'static str {
+        match self {
+            Self::Six => "Keep the Favorites shelf compact.",
+            Self::Twelve => "Default Favorites shelf capacity.",
+            Self::TwentyFour => "Allow a larger cross-space Favorites shelf.",
+        }
+    }
+}