Add REPL dropdown menu to toolbar (#14493)

TODO: 


- [x] Actions run from menu not firing
- [x] Menu differentiates idle and busy for running kernel

Menu States:
- [x] No session && no support known

No session && no kernel installed for languages of known support
- (TODO after) Intro to REPL
- [x] Link to docs

No session but can start one
- [x] Start REPL
- (TODO after) More info -> Docs?

Yes Session

- [x] Info: Kernel name, language
  example: chatlab-3.7-adsf87fsa (Python)
  example: condapy-3.7 (Python)
- [x] Change Kernel -> https://zed.dev/docs/repl#change-kernel
- ---
- [x] Run
- [x] Interrupt
- [x] Clear Outputs
- ---
- [x] Shutdown


(Release notes left empty as the change will be documented in the REPL
release!)

Reserved for a follow on PR:

```
- [ ] Status should update when the menu is open (missing `cx.notify`?)
- [ ] Shutdown all kernels action
- [ ] Restart action
- [ ] [Default kernel changed - restart (this kernel) to apply] // todo!(kyle): need some kind of state thing that says if this has happened
```


Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Co-authored-by: Kyle Kelley <rgbkrk@gmail.com>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

crates/ui/src/components/button/button_like.rs

@@ -370,6 +370,14 @@ impl ButtonLike {
         }
     }
 
+    pub fn new_rounded_left(id: impl Into<ElementId>) -> Self {
+        Self::new(id).rounding(ButtonLikeRounding::Left)
+    }
+
+    pub fn new_rounded_right(id: impl Into<ElementId>) -> Self {
+        Self::new(id).rounding(ButtonLikeRounding::Right)
+    }
+
     pub(crate) fn height(mut self, height: DefiniteLength) -> Self {
         self.height = Some(height);
         self

crates/ui/src/components/icon.rs

@@ -91,7 +91,7 @@ impl IconSize {
 }
 
 #[derive(
-    Debug, Eq, PartialEq, Copy, Clone, EnumIter, EnumString, IntoStaticStr, Serialize, Deserialize,
+    Debug, PartialEq, Eq, Copy, Clone, EnumIter, EnumString, IntoStaticStr, Serialize, Deserialize,
 )]
 pub enum IconName {
     Ai,
@@ -118,6 +118,8 @@ pub enum IconName {
     CaseSensitive,
     Check,
     ChevronDown,
+    /// This chevron indicates a popover menu.
+    ChevronDownSmall,
     ChevronLeft,
     ChevronRight,
     ChevronUp,
@@ -160,11 +162,11 @@ pub enum IconName {
     Font,
     FontSize,
     FontWeight,
-    GenericClose,
-    GenericMaximize,
-    GenericMinimize,
-    GenericRestore,
     Github,
+    GenericMinimize,
+    GenericMaximize,
+    GenericClose,
+    GenericRestore,
     Hash,
     HistoryRerun,
     Indicator,
@@ -194,9 +196,6 @@ pub enum IconName {
     PullRequest,
     Quote,
     Regex,
-    ReplPlay,
-    ReplOff,
-    ReplPause,
     ReplNeutral,
     Replace,
     ReplaceAll,
@@ -235,12 +234,12 @@ pub enum IconName {
     Trash,
     TriangleRight,
     Update,
-    Visible,
     WholeWord,
     XCircle,
     ZedAssistant,
     ZedAssistantFilled,
     ZedXCopilot,
+    Visible,
 }
 
 impl IconName {
@@ -270,6 +269,7 @@ impl IconName {
             IconName::CaseSensitive => "icons/case_insensitive.svg",
             IconName::Check => "icons/check.svg",
             IconName::ChevronDown => "icons/chevron_down.svg",
+            IconName::ChevronDownSmall => "icons/chevron_down_small.svg",
             IconName::ChevronLeft => "icons/chevron_left.svg",
             IconName::ChevronRight => "icons/chevron_right.svg",
             IconName::ChevronUp => "icons/chevron_up.svg",
@@ -312,11 +312,11 @@ impl IconName {
             IconName::Font => "icons/font.svg",
             IconName::FontSize => "icons/font_size.svg",
             IconName::FontWeight => "icons/font_weight.svg",
-            IconName::GenericClose => "icons/generic_close.svg",
-            IconName::GenericMaximize => "icons/generic_maximize.svg",
-            IconName::GenericMinimize => "icons/generic_minimize.svg",
-            IconName::GenericRestore => "icons/generic_restore.svg",
             IconName::Github => "icons/github.svg",
+            IconName::GenericMinimize => "icons/generic_minimize.svg",
+            IconName::GenericMaximize => "icons/generic_maximize.svg",
+            IconName::GenericClose => "icons/generic_close.svg",
+            IconName::GenericRestore => "icons/generic_restore.svg",
             IconName::Hash => "icons/hash.svg",
             IconName::HistoryRerun => "icons/history_rerun.svg",
             IconName::Indicator => "icons/indicator.svg",
@@ -346,10 +346,7 @@ impl IconName {
             IconName::PullRequest => "icons/pull_request.svg",
             IconName::Quote => "icons/quote.svg",
             IconName::Regex => "icons/regex.svg",
-            IconName::ReplPlay => "icons/repl_play.svg",
-            IconName::ReplPause => "icons/repl_pause.svg",
             IconName::ReplNeutral => "icons/repl_neutral.svg",
-            IconName::ReplOff => "icons/repl_off.svg",
             IconName::Replace => "icons/replace.svg",
             IconName::ReplaceAll => "icons/replace_all.svg",
             IconName::ReplaceNext => "icons/replace_next.svg",
@@ -387,12 +384,12 @@ impl IconName {
             IconName::Trash => "icons/trash.svg",
             IconName::TriangleRight => "icons/triangle_right.svg",
             IconName::Update => "icons/update.svg",
-            IconName::Visible => "icons/visible.svg",
             IconName::WholeWord => "icons/word_search.svg",
             IconName::XCircle => "icons/error.svg",
             IconName::ZedAssistant => "icons/zed_assistant.svg",
             IconName::ZedAssistantFilled => "icons/zed_assistant_filled.svg",
             IconName::ZedXCopilot => "icons/zed_x_copilot.svg",
+            IconName::Visible => "icons/visible.svg",
         }
     }
 }