Add "Open in Terminal" context menu entries for project panel, editor and tab context menus (#10741)

Closes https://github.com/zed-industries/zed/issues/4566

Pane tabs (does not exist for multibuffer tabs):
<img width="439" alt="Screenshot 2024-04-18 at 23 01 08"
src="https://github.com/zed-industries/zed/assets/2690773/3af79ed8-07ea-4cf2-bcf9-735b1b3be8c4">

Editor context menu:
<img width="404" alt="Screenshot 2024-04-18 at 23 01 14"
src="https://github.com/zed-industries/zed/assets/2690773/38ea7afc-df2b-45ef-8331-eb6a4588af9f">

Project panel context menu (was not shown for file entries before this):
<img width="408" alt="Screenshot 2024-04-18 at 23 01 18"
src="https://github.com/zed-industries/zed/assets/2690773/e336fce1-7da0-4671-b8d2-8d3409c23eb6">

Release Notes:

- (breaking change) Moved `project_panel::OpenInTerminal` into
`workspace::OpenInTerminal` action and add it in editors, tab context
menus and proper panel file entries
([4566](https://github.com/zed-industries/zed/issues/4566))

crates/editor/src/mouse_context_menu.rs

@@ -3,6 +3,7 @@ use crate::{
     GoToTypeDefinition, Rename, RevealInFinder, SelectMode, ToggleCodeActions,
 };
 use gpui::{DismissEvent, Pixels, Point, Subscription, View, ViewContext};
+use workspace::OpenInTerminal;
 
 pub struct MouseContextMenu {
     pub(crate) position: Point<Pixels>,
@@ -83,6 +84,7 @@ pub fn deploy_context_menu(
                 )
                 .separator()
                 .action("Reveal in Finder", Box::new(RevealInFinder))
+                .action("Open in Terminal", Box::new(OpenInTerminal))
         })
     };
     let mouse_context_menu = MouseContextMenu::new(position, context_menu, cx);