Rename language server to objc-clangd to fix builtin conflict#2

rodrigopex wants to merge 2 commits intoAkzestia:mainAkzestia/objcpp:mainfrom

rodrigopex:fix/rename-clangd-to-objc-clangdrodrigopex/objcpp-zed:fix/rename-clangd-to-objc-clangdCopy head branch name to clipboard