Use new settings API in recon and scanner (#1394)

* Use new settings in recon
* Trim on string value read, remove dupe entry
* Check update_range flag when setting values
* Add a few saved settings to scanner
* Add copywrite note

firmware/application/app_settings.hpp

@@ -94,6 +94,9 @@ class SettingsStore {
     SettingsStore(std::string_view store_name, SettingBindings bindings);
     ~SettingsStore();
 
+    void reload();
+    void save() const;
+
    private:
     std::string_view store_name_;
     SettingBindings bindings_;