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/dialog/dialogs/error_dialog.rs

@@ -0,0 +1,37 @@
+use crate::{layout::widgets::*, message_prelude::FrontendMessage};
+
+/// A dialog to notify users of a non-fatal error.
+pub struct Error {
+	pub title: String,
+	pub description: String,
+}
+
+impl PropertyHolder for Error {
+	fn properties(&self) -> WidgetLayout {
+		WidgetLayout::new(vec![
+			LayoutRow::Row {
+				widgets: vec![WidgetHolder::new(Widget::TextLabel(TextLabel {
+					value: self.title.clone(),
+					bold: true,
+					..Default::default()
+				}))],
+			},
+			LayoutRow::Row {
+				widgets: vec![WidgetHolder::new(Widget::TextLabel(TextLabel {
+					value: self.description.clone(),
+					multiline: true,
+					..Default::default()
+				}))],
+			},
+			LayoutRow::Row {
+				widgets: vec![WidgetHolder::new(Widget::TextButton(TextButton {
+					label: "OK".to_string(),
+					emphasized: true,
+					min_width: 96,
+					on_update: WidgetCallback::new(|_| FrontendMessage::DisplayDialogDismiss.into()),
+					..Default::default()
+				}))],
+			},
+		])
+	}
+}