Allow configuring custom git hosting providers in project settings (#31929)

Closes #29229

Release Notes:

- Extended the support for configuring custom git hosting providers to
cover project settings in addition to global settings.

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>

crates/settings/src/settings_store.rs

@@ -250,6 +250,7 @@ trait AnySettingValue: 'static + Send + Sync {
         cx: &mut App,
     ) -> Result<Box<dyn Any>>;
     fn value_for_path(&self, path: Option<SettingsLocation>) -> &dyn Any;
+    fn all_local_values(&self) -> Vec<(WorktreeId, Arc<Path>, &dyn Any)>;
     fn set_global_value(&mut self, value: Box<dyn Any>);
     fn set_local_value(&mut self, root_id: WorktreeId, path: Arc<Path>, value: Box<dyn Any>);
     fn json_schema(
@@ -376,6 +377,24 @@ impl SettingsStore {
             .expect("no default value for setting type")
     }
 
+    /// Get all values from project specific settings
+    pub fn get_all_locals<T: Settings>(&self) -> Vec<(WorktreeId, Arc<Path>, &T)> {
+        self.setting_values
+            .get(&TypeId::of::<T>())
+            .unwrap_or_else(|| panic!("unregistered setting type {}", type_name::<T>()))
+            .all_local_values()
+            .into_iter()
+            .map(|(id, path, any)| {
+                (
+                    id,
+                    path,
+                    any.downcast_ref::<T>()
+                        .expect("wrong value type for setting"),
+                )
+            })
+            .collect()
+    }
+
     /// Override the global value for a setting.
     ///
     /// The given value will be overwritten if the user settings file changes.
@@ -1235,6 +1254,13 @@ impl<T: Settings> AnySettingValue for SettingValue<T> {
         (key, value)
     }
 
+    fn all_local_values(&self) -> Vec<(WorktreeId, Arc<Path>, &dyn Any)> {
+        self.local_values
+            .iter()
+            .map(|(id, path, value)| (*id, path.clone(), value as _))
+            .collect()
+    }
+
     fn value_for_path(&self, path: Option<SettingsLocation>) -> &dyn Any {
         if let Some(SettingsLocation { worktree_id, path }) = path {
             for (settings_root_id, settings_path, value) in self.local_values.iter().rev() {