feat: add lesson export and import functionality

- Implemented `LessonExport` and `LessonImport` actions in the action module.
- Added corresponding command parsing for lesson export and import.
- Created functions to handle lesson export and import in the memory module.
- Updated state management to reflect changes after lesson operations.
- Introduced deferred operations for handling asynchronous tasks in the event loop.
- Enhanced the tool execution context to include graduated checks for file operations.
- Added OAuth support with PKCE for secure authorization flows.
- Implemented a loopback server for handling OAuth redirects.
- Refactored various modules to improve code organization and maintainability.

src/app/mode/settings.rs

@@ -0,0 +1,22 @@
+use crate::app::runtime::actions::Action;
+use crate::app::state::rest::AppStateRest;
+use crate::model::settings::{Settings, InternetMode};
+
+pub fn apply_settings_action(state: &mut AppStateRest, action: &Action) {
+    if let Action::ToggleYoloArm = action {
+        state.misc.yolo_armed = !state.misc.yolo_armed;
+        state.dirty = true;
+    }
+}
+
+pub fn cycle_internet_mode(settings: &mut Settings) {
+    settings.internet_mode = match settings.internet_mode {
+        InternetMode::Off => InternetMode::ReadOnly,
+        InternetMode::ReadOnly => InternetMode::Full,
+        InternetMode::Full => InternetMode::Off,
+    };
+}
+
+pub fn cycle_review_enabled(settings: &mut Settings) {
+    settings.review_enabled = !settings.review_enabled;
+}