test sqlx native ssl

Measures a bug(?) in sqlx with native-ssl.

make init-ca
make init-db
# make up (init-db also calls make up)
./measure.sh  # optional duration in seconds as $1
# make down
massif-visualizer measurements/*

system dependencies

• Valgrind with Massif
• massif-visualizer
• sqlx
• docker and docker compose