I'm an idiot!!! Yesterday I try to compile the safe_clients_libs doing, more or less, the same step and always I have an error in rust_sodium because I didn't download the right version. With the right release I compiled at first.
We don`t need to compile the binary of Launcher. Only replace the safe_core.dll of the launcher with the new one in safe-launcher-v0.11.0-win-x64\resources\app.asar.unpacked\dist