Start work on creating gpui2 version of project panel

crates/project_panel2/src/project_panel_settings.rs

@@ -0,0 +1,45 @@
+use anyhow;
+use schemars::JsonSchema;
+use serde_derive::{Deserialize, Serialize};
+use settings::Settings;
+
+#[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]
+#[serde(rename_all = "snake_case")]
+pub enum ProjectPanelDockPosition {
+    Left,
+    Right,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct ProjectPanelSettings {
+    pub default_width: f32,
+    pub dock: ProjectPanelDockPosition,
+    pub file_icons: bool,
+    pub folder_icons: bool,
+    pub git_status: bool,
+    pub indent_size: f32,
+}
+
+#[derive(Clone, Default, Serialize, Deserialize, JsonSchema, Debug)]
+pub struct ProjectPanelSettingsContent {
+    pub default_width: Option<f32>,
+    pub dock: Option<ProjectPanelDockPosition>,
+    pub file_icons: Option<bool>,
+    pub folder_icons: Option<bool>,
+    pub git_status: Option<bool>,
+    pub indent_size: Option<f32>,
+}
+
+impl Settings for ProjectPanelSettings {
+    const KEY: Option<&'static str> = Some("project_panel");
+
+    type FileContent = ProjectPanelSettingsContent;
+
+    fn load(
+        default_value: &Self::FileContent,
+        user_values: &[&Self::FileContent],
+        _: &mut gpui::AppContext,
+    ) -> anyhow::Result<Self> {
+        Self::load_via_json_merge(default_value, user_values)
+    }
+}