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/editor.rs

@@ -131,10 +131,10 @@ use ui::{
 use util::{defer, maybe, post_inc, RangeExt, ResultExt, TryFutureExt};
 use workspace::item::ItemHandle;
 use workspace::notifications::NotificationId;
-use workspace::Toast;
 use workspace::{
     searchable::SearchEvent, ItemNavHistory, SplitDirection, ViewId, Workspace, WorkspaceId,
 };
+use workspace::{OpenInTerminal, OpenTerminal, Toast};
 
 use crate::hover_links::find_url;
 
@@ -4943,6 +4943,25 @@ impl Editor {
         }
     }
 
+    pub fn open_active_item_in_terminal(&mut self, _: &OpenInTerminal, cx: &mut ViewContext<Self>) {
+        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
+            let project_path = buffer.read(cx).project_path(cx)?;
+            let project = self.project.as_ref()?.read(cx);
+            let entry = project.entry_for_path(&project_path, cx)?;
+            let abs_path = project.absolute_path(&project_path, cx)?;
+            let parent = if entry.is_symlink {
+                abs_path.canonicalize().ok()?
+            } else {
+                abs_path
+            }
+            .parent()?
+            .to_path_buf();
+            Some(parent)
+        }) {
+            cx.dispatch_action(OpenTerminal { working_directory }.boxed_clone());
+        }
+    }
+
     fn gather_revert_changes(
         &mut self,
         selections: &[Selection<Anchor>],