Add an extensions installation view (#7689)

This PR adds a view for installing extensions within Zed.

My subtasks:

- [X] Page Extensions and assign in App Menu
- [X] List extensions 
- [X] Button to Install/Uninstall
- [x] Search Input to search in extensions registry API
- [x] Get Extensions from API
- [x] Action install to download extension and copy in /extensions
folder
- [x] Action uninstall to remove from /extensions folder
- [x] Filtering
- [x] Better UI Design

Open to collab!

Release Notes:

- Added an extension installation view. Open it using the `zed:
extensions` action in the command palette
([#7096](https://github.com/zed-industries/zed/issues/7096)).

---------

Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>
Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Carlos <foxkdev@gmail.com>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Co-authored-by: Max <max@zed.dev>

crates/zed/Cargo.toml

@@ -23,7 +23,7 @@ assets.workspace = true
 assistant.workspace = true
 async-compression.workspace = true
 async-recursion = "0.3"
-async-tar = "0.4.2"
+async-tar.workspace = true
 async-trait.workspace = true
 audio.workspace = true
 auto_update.workspace = true
@@ -45,6 +45,7 @@ diagnostics.workspace = true
 editor.workspace = true
 env_logger.workspace = true
 extension.workspace = true
+extensions_ui.workspace = true
 feature_flags.workspace = true
 feedback.workspace = true
 file_finder.workspace = true

crates/zed/src/app_menus.rs

@@ -21,6 +21,7 @@ pub fn app_menus() -> Vec<Menu<'static>> {
                         MenuItem::action("Select Theme", theme_selector::Toggle),
                     ],
                 }),
+                MenuItem::action("Extensions", extensions_ui::Extensions),
                 MenuItem::action("Install CLI", install_cli::Install),
                 MenuItem::separator(),
                 MenuItem::action("Hide Zed", super::Hide),

crates/zed/src/main.rs

@@ -173,7 +173,13 @@ fn main() {
         );
         assistant::init(cx);
 
-        extension::init(fs.clone(), languages.clone(), ThemeRegistry::global(cx), cx);
+        extension::init(
+            fs.clone(),
+            http.clone(),
+            languages.clone(),
+            ThemeRegistry::global(cx),
+            cx,
+        );
 
         load_user_themes_in_background(fs.clone(), cx);
         #[cfg(target_os = "macos")]
@@ -254,6 +260,7 @@ fn main() {
         feedback::init(cx);
         markdown_preview::init(cx);
         welcome::init(cx);
+        extensions_ui::init(cx);
 
         cx.set_menus(app_menus());
         initialize_workspace(app_state.clone(), cx);

crates/zed/src/zed.rs

@@ -2396,6 +2396,7 @@ mod tests {
                 .unwrap()
         }
     }
+
     fn init_keymap_test(cx: &mut TestAppContext) -> Arc<AppState> {
         cx.update(|cx| {
             let app_state = AppState::test(cx);
@@ -2409,6 +2410,7 @@ mod tests {
             app_state
         })
     }
+
     #[gpui::test]
     async fn test_base_keymap(cx: &mut gpui::TestAppContext) {
         let executor = cx.executor();