Migrate dialogs to Rust and add a New File dialog (#623)

* Migrate coming soon and about dialog to Rust

* Migrate confirm close and close all

* Migrate dialog error

* Improve keyboard navigation throughout UI

* Cleanup and fix panic dialog

* Reduce css spacing to better match old dialogs

* Add new document modal

* Fix crash when generating default name

* Populate rust about graphite data on startup

* Code review changes

* Move one more :focus CSS rule into App.vue

* Add a dialog message and move dialogs

* Split out keyboard input navigation from this branch

* Improvements including simplifying panic dialog code

Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/layout/layout_message.rs

@@ -15,6 +15,7 @@ pub enum LayoutMessage {
 #[derive(PartialEq, Clone, Deserialize, Serialize, Debug, Hash, Eq, Copy)]
 #[repr(u8)]
 pub enum LayoutTarget {
+	DialogDetails,
 	DocumentBar,
 	PropertiesOptionsPanel,
 	PropertiesSectionsPanel,