Simplify debug launcher UI (#31928)

This PR updates the name of the `NewSessionModal` to `NewProcessModal`
(to reflect it's new purpose), changes the tabs in the modal to read
`Run | Debug | Attach | Launch` and changes the associated types in code
to match the tabs. In addition, this PR adds a few labels to the text
fields in the `Launch` tab, and adds a link to open the associated
settings file. In both debug.json files, added links to the zed.dev
debugger docs.

Release Notes:

- Debugger Beta: Improve the new process modal

crates/zed/src/zed.rs

@@ -50,8 +50,8 @@ use rope::Rope;
 use search::project_search::ProjectSearchBar;
 use settings::{
     DEFAULT_KEYMAP_PATH, InvalidSettingsError, KeymapFile, KeymapFileLoadResult, Settings,
-    SettingsStore, VIM_KEYMAP_PATH, initial_debug_tasks_content, initial_project_settings_content,
-    initial_tasks_content, update_settings_file,
+    SettingsStore, VIM_KEYMAP_PATH, initial_local_debug_tasks_content,
+    initial_project_settings_content, initial_tasks_content, update_settings_file,
 };
 use std::path::PathBuf;
 use std::sync::atomic::{self, AtomicBool};
@@ -740,6 +740,14 @@ fn register_actions(
                 cx,
             );
         })
+        .register_action(move |_: &mut Workspace, _: &OpenDebugTasks, window, cx| {
+            open_settings_file(
+                paths::debug_scenarios_file(),
+                || settings::initial_debug_tasks_content().as_ref().into(),
+                window,
+                cx,
+            );
+        })
         .register_action(open_project_settings_file)
         .register_action(open_project_tasks_file)
         .register_action(open_project_debug_tasks_file)
@@ -1508,7 +1516,7 @@ fn open_project_debug_tasks_file(
     open_local_file(
         workspace,
         local_debug_file_relative_path(),
-        initial_debug_tasks_content(),
+        initial_local_debug_tasks_content(),
         window,
         cx,
     )