Add clang-format to cosmocc toolchain

The clang-format binary is only 6mb so how can we resist?

Author: jart

tool/cosmocc/package.sh

@@ -180,12 +180,13 @@ if [ ! -x bin/x86_64-linux-cosmo-gcc ]; then
   wait
   unzip aarch64-gcc.zip &
   unzip x86_64-gcc.zip &
-  unzip llvm.zip bin/clang-19 &
+  unzip llvm.zip bin/clang-19 bin/clang-format &
   wait
   rm -f aarch64-gcc.zip
   rm -f x86_64-gcc.zip
   rm -f llvm.zip
   mv bin/clang-19 bin/cosmo-clang
+  mv bin/clang-format bin/clang-format
 fi
 rm -f bin/*-cpp
 rm -f bin/*-gcc-*