debugger: Add memory view (#33955)

This is mostly setting up the UI for now; I expect it to be the biggest
chunk of work.

Release Notes:

- debugger: Added memory view

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>
Co-authored-by: Mikayla Maki <mikayla@zed.dev>

crates/debugger_ui/src/debugger_panel.rs

@@ -2,6 +2,7 @@ use crate::persistence::DebuggerPaneItem;
 use crate::session::DebugSession;
 use crate::session::running::RunningState;
 use crate::session::running::breakpoint_list::BreakpointList;
+
 use crate::{
     ClearAllBreakpoints, Continue, CopyDebugAdapterArguments, Detach, FocusBreakpointList,
     FocusConsole, FocusFrames, FocusLoadedSources, FocusModules, FocusTerminal, FocusVariables,
@@ -1804,6 +1805,7 @@ impl Render for DebugPanel {
                                                 .child(breakpoint_list)
                                                 .child(Divider::vertical())
                                                 .child(welcome_experience)
+                                                .child(Divider::vertical())
                                         } else {
                                             this.items_end()
                                                 .child(welcome_experience)