Split servoshell into Desktop and common part (#32457)

* servoshell: Move desktop files

Move files related to winit into a desktop module.
This is a preparation to merge the android and ohos apps into
servoshell.

* servoshell: Format imports

* servoshell: Move panic hook into separate file

* servoshell: Move desktop main

* Consider ohos as not desktop

* servoshell: Adjust dependencies for shared code

* servoshell: Remove native-bluetooth from default features

There currently is no good way to have target specific default features.

* Rename desktop_main.rs to cli.rs

* Remove todo

ports/servoshell/desktop/window_trait.rs

@@ -0,0 +1,51 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! Definition of Window.
+//! Implemented by headless and headed windows.
+
+use euclid::{Length, Scale};
+use servo::compositing::windowing::{EmbedderEvent, WindowMethods};
+use servo::config::opts;
+use servo::embedder_traits::Cursor;
+use servo::servo_geometry::DeviceIndependentPixel;
+use servo::style_traits::DevicePixel;
+use servo::webrender_api::units::{DeviceIntPoint, DeviceIntSize};
+
+use super::events_loop::WakerEvent;
+
+// This should vary by zoom level and maybe actual text size (focused or under cursor)
+pub const LINE_HEIGHT: f32 = 38.0;
+
+pub trait WindowPortsMethods: WindowMethods {
+    fn get_events(&self) -> Vec<EmbedderEvent>;
+    fn id(&self) -> winit::window::WindowId;
+    fn hidpi_factor(&self) -> Scale<f32, DeviceIndependentPixel, DevicePixel> {
+        self.device_pixel_ratio_override()
+            .unwrap_or_else(|| match opts::get().output_file {
+                Some(_) => Scale::new(1.0),
+                None => self.device_hidpi_factor(),
+            })
+    }
+    fn device_hidpi_factor(&self) -> Scale<f32, DeviceIndependentPixel, DevicePixel>;
+    fn device_pixel_ratio_override(
+        &self,
+    ) -> Option<Scale<f32, DeviceIndependentPixel, DevicePixel>>;
+    fn page_height(&self) -> f32;
+    fn get_fullscreen(&self) -> bool;
+    fn queue_embedder_events_for_winit_event(&self, event: winit::event::WindowEvent);
+    fn is_animating(&self) -> bool;
+    fn set_title(&self, _title: &str) {}
+    fn request_inner_size(&self, size: DeviceIntSize) -> Option<DeviceIntSize>;
+    fn set_position(&self, _point: DeviceIntPoint) {}
+    fn set_fullscreen(&self, _state: bool) {}
+    fn set_cursor(&self, _cursor: Cursor) {}
+    fn new_glwindow(
+        &self,
+        events_loop: &winit::event_loop::EventLoopWindowTarget<WakerEvent>,
+    ) -> Box<dyn webxr::glwindow::GlWindow>;
+    fn winit_window(&self) -> Option<&winit::window::Window>;
+    fn toolbar_height(&self) -> Length<f32, DeviceIndependentPixel>;
+    fn set_toolbar_height(&self, height: Length<f32, DeviceIndependentPixel>);
+}