workspace: Implement Extended Terminal Option (#26211)

Closes #10211 
Closes #7575 

Screenshot of feature:
![Screenshot 2025-03-06 at 1 08
13 PM](https://github.com/user-attachments/assets/73cc4519-248b-4264-9ce8-42d0980cf73c)

Screenshot of proposed menu:
![Screenshot 2025-03-06 at 1 14
30 PM](https://github.com/user-attachments/assets/efc7c18a-a2a5-491f-b3e5-5ed181f23906)

Screenshot of proposed menu closed:
![Screenshot 2025-03-06 at 1 14
57 PM](https://github.com/user-attachments/assets/0b42829c-abe3-48aa-9b81-30a0aeeac8fd)

Release Notes:

- Configuration of bottom_dock_layout in settings.json
- Layout Mode button in Title Bar
- 4 different layout modes for the bottom dock: contained (default),
full (extends below both docks), left-aligned, right-aligned (extends
only below the respective dock)

---------

Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>

crates/icons/src/icons.rs

@@ -10,8 +10,8 @@ use strum::{EnumIter, EnumString, IntoStaticStr};
 pub enum IconName {
     Ai,
     AiAnthropic,
-    AiBedrock,
     AiAnthropicHosted,
+    AiBedrock,
     AiDeepSeek,
     AiEdit,
     AiGoogle,
@@ -61,6 +61,7 @@ pub enum IconName {
     CircleOff,
     Clipboard,
     Close,
+    Cloud,
     Code,
     Cog,
     Command,
@@ -74,22 +75,22 @@ pub enum IconName {
     CountdownTimer,
     CursorIBeam,
     Dash,
+    DatabaseZap,
+    Debug,
     DebugBreakpoint,
+    DebugContinue,
     DebugDisabledBreakpoint,
     DebugDisabledLogBreakpoint,
+    DebugDisconnect,
     DebugIgnoreBreakpoints,
+    DebugLogBreakpoint,
     DebugPause,
-    DebugContinue,
-    DebugStepOver,
+    DebugRestart,
+    DebugStepBack,
     DebugStepInto,
     DebugStepOut,
-    DebugStepBack,
-    DebugRestart,
-    Debug,
+    DebugStepOver,
     DebugStop,
-    DebugDisconnect,
-    DebugLogBreakpoint,
-    DatabaseZap,
     Delete,
     Diff,
     Disconnected,
@@ -99,18 +100,18 @@ pub enum IconName {
     Envelope,
     Eraser,
     Escape,
-    ExpandVertical,
     Exit,
-    ExternalLink,
-    ExpandUp,
     ExpandDown,
+    ExpandUp,
+    ExpandVertical,
+    ExternalLink,
     Eye,
     File,
     FileCode,
     FileCreate,
     FileDelete,
-    FileDoc,
     FileDiff,
+    FileDoc,
     FileGeneric,
     FileGit,
     FileLock,
@@ -133,16 +134,17 @@ pub enum IconName {
     GenericMaximize,
     GenericMinimize,
     GenericRestore,
-    Github,
-    Globe,
     GitBranch,
     GitBranchSmall,
+    Github,
+    Globe,
     Hash,
     HistoryRerun,
     Indicator,
     Info,
     InlayHint,
     Keyboard,
+    Layout,
     Library,
     LightBulb,
     LineHeight,
@@ -155,7 +157,6 @@ pub enum IconName {
     Maximize,
     Menu,
     MessageBubbles,
-    Cloud,
     Mic,
     MicMute,
     Microscope,
@@ -227,8 +228,8 @@ pub enum IconName {
     Tab,
     Terminal,
     TextSnippet,
-    ThumbsUp,
     ThumbsDown,
+    ThumbsUp,
     Trash,
     TrashAlt,
     Triangle,
@@ -247,10 +248,10 @@ pub enum IconName {
     ZedAssistant,
     ZedAssistantFilled,
     ZedPredict,
-    ZedPredictUp,
-    ZedPredictDown,
     ZedPredictDisabled,
+    ZedPredictDown,
     ZedPredictError,
+    ZedPredictUp,
     ZedXCopilot,
 }