settings ui: Add new batch of settings (#39650)

Release Notes:

- N/A

crates/settings/src/settings_content.rs

@@ -397,7 +397,19 @@ pub enum SteppingGranularity {
     Instruction,
 }
 
-#[derive(Copy, Clone, Debug, Serialize, Deserialize, JsonSchema, MergeFrom, PartialEq, Eq)]
+#[derive(
+    Copy,
+    Clone,
+    Debug,
+    Serialize,
+    Deserialize,
+    JsonSchema,
+    MergeFrom,
+    PartialEq,
+    Eq,
+    strum::VariantArray,
+    strum::VariantNames,
+)]
 #[serde(rename_all = "snake_case")]
 pub enum DockPosition {
     Left,
@@ -571,7 +583,18 @@ pub struct FileFinderSettingsContent {
 }
 
 #[derive(
-    Debug, PartialEq, Eq, Clone, Copy, Default, Serialize, Deserialize, JsonSchema, MergeFrom,
+    Debug,
+    PartialEq,
+    Eq,
+    Clone,
+    Copy,
+    Default,
+    Serialize,
+    Deserialize,
+    JsonSchema,
+    MergeFrom,
+    strum::VariantArray,
+    strum::VariantNames,
 )]
 #[serde(rename_all = "lowercase")]
 pub enum FileFinderWidthContent {
@@ -733,7 +756,19 @@ pub enum DockSide {
     Right,
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Deserialize, Serialize, JsonSchema, MergeFrom)]
+#[derive(
+    Copy,
+    Clone,
+    Debug,
+    PartialEq,
+    Eq,
+    Deserialize,
+    Serialize,
+    JsonSchema,
+    MergeFrom,
+    strum::VariantArray,
+    strum::VariantNames,
+)]
 #[serde(rename_all = "snake_case")]
 pub enum ShowIndentGuides {
     Always,

crates/settings/src/settings_content/workspace.rs

@@ -541,7 +541,18 @@ pub struct ProjectPanelSettingsContent {
 }
 
 #[derive(
-    Copy, Clone, Debug, Default, Serialize, Deserialize, JsonSchema, MergeFrom, PartialEq, Eq,
+    Copy,
+    Clone,
+    Debug,
+    Default,
+    Serialize,
+    Deserialize,
+    JsonSchema,
+    MergeFrom,
+    PartialEq,
+    Eq,
+    strum::VariantArray,
+    strum::VariantNames,
 )]
 #[serde(rename_all = "snake_case")]
 pub enum ProjectPanelEntrySpacing {