add runtime dependency on setuptools (#4919)
add runtime dependency on setuptools (#4919)

resolves #4918

Co-authored-by: Maximilian Hils <46f1a0bd5592a2f9244ca321b129902a06b53e03@maximilianhils.com>
mitmproxy/mitmproxy,mitmproxy/mitmproxy,mhils/mitmproxy,mitmproxy/mitmproxy,mhils/mitmproxy,Kriechi/mitmproxy,mhils/mitmproxy,Kriechi/mitmproxy,Kriechi/mitmproxy,mhils/mitmproxy,Kriechi/mitmproxy,mitmproxy/mitmproxy,mitmproxy/mitmproxy,mhils/mitmproxy