ClangCodeModel: Mention project name in clangd indexing message

This will help avoid confusion in case of multi-project sessions.
We also shorten the message a bit so it won't be cut off in the progress
bar before the project name.

Change-Id: I0e5885f89a976b14f758f9be77e7669f199cd887
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/clangcodemodel/clangdclient.cpp

@@ -1307,7 +1307,10 @@ ClangdClient::ClangdClient(Project *project, const Utils::FilePath &jsonDbDir)
     setClientCapabilities(caps);
     setLocatorsEnabled(false);
     setAutoRequestCodeActions(false); // clangd sends code actions inside diagnostics
-    setProgressTitleForToken(indexingToken(), tr("Parsing C/C++ Files (clangd)"));
+    if (project) {
+        setProgressTitleForToken(indexingToken(),
+                                 tr("Indexing %1 with clangd").arg(project->displayName()));
+    }
     setCurrentProject(project);
     setDocumentChangeUpdateThreshold(d->settings.documentUpdateThreshold);