Add charles certificate to JVM

This is an example how to do that on a Mac:

sudo keytool -import -noprompt -alias charles-$(date +%Y%m%d%H%M%S) -file "Downloads/charles-ssl-proxying-certificate.pem" -keystore "/Library/Java/JavaVirtualMachines/jdk-10.0.2.jdk/Contents/Home/lib/security/cacerts" -storepass changeit