debugger: Start on tabless design (#27837)

![image](https://github.com/user-attachments/assets/1cd54b70-5457-4c64-95bd-45a7055ea165)

Release Notes:

- N/A

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Anthony <anthony@zed.dev>

crates/icons/src/icons.rs

@@ -23,6 +23,7 @@ pub enum IconName {
     ArrowCircle,
     ArrowDown,
     ArrowDownFromLine,
+    ArrowDownRight,
     ArrowLeft,
     ArrowRight,
     ArrowRightLeft,
@@ -44,6 +45,7 @@ pub enum IconName {
     BookCopy,
     BookPlus,
     Brain,
+    BugOff,
     CaseSensitive,
     Check,
     CheckDouble,
@@ -55,6 +57,7 @@ pub enum IconName {
     ChevronUp,
     ChevronUpDown,
     Circle,
+    CircleOff,
     Clipboard,
     Close,
     Code,
@@ -166,6 +169,7 @@ pub enum IconName {
     Play,
     Plus,
     PocketKnife,
+    Power,
     Public,
     PullRequest,
     Quote,