Add --query-driver to clangd for system include paths

Allows clangd to find system headers (e.g. GStreamer on Jetson)
by querying the system compiler. Falls back gracefully when
the drivers don't exist.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: nathom-ari

lua/plugins/development.lua

@@ -123,7 +123,12 @@ return {
       end
 
       if nixCats("lang-c") then
-        servers.clangd = {}
+        servers.clangd = {
+          cmd = {
+            "clangd",
+            "--query-driver=/usr/bin/gcc,/usr/bin/g++,/usr/bin/cc,/usr/bin/c++",
+          },
+        }
       end
 
       if isNixCats then