Persist selections for editors (#25083)

Part of https://github.com/zed-industries/zed/issues/7371
Closes https://github.com/zed-industries/zed/issues/12853

Release Notes:

- Started to persist latest selections for editors, to restore those on
restart

crates/language_tools/src/lsp_log_tests.rs

@@ -109,6 +109,7 @@ fn init_test(cx: &mut gpui::TestAppContext) {
     cx.update(|cx| {
         let settings_store = SettingsStore::test(cx);
         cx.set_global(settings_store);
+        workspace::init_settings(cx);
         theme::init(theme::LoadThemes::JustBase, cx);
         release_channel::init(SemanticVersion::default(), cx);
         language::init(cx);