Run regal and opa in CI

[sbp-bvanb]

rego_dir=$(find . -type f -name '*.rego' -exec dirname {} \; | sort -u)


for dir in $rego_dir; do
    echo "Running opa test in directory: $dir"
    (cd "$dir" && opa test . -v)
done

opa test .

opa fmt . --write

regal lint .