feat: add port-forward subcommand (#1350)

cryptorand/slices.go

@@ -0,0 +1,20 @@
+package cryptorand
+
+import (
+	"golang.org/x/xerrors"
+)
+
+// Element returns a random element of the slice. An error will be returned if
+// the slice has no elements in it.
+func Element[T any](s []T) (out T, err error) {
+	if len(s) == 0 {
+		return out, xerrors.New("slice must have at least one element")
+	}
+
+	i, err := Intn(len(s))
+	if err != nil {
+		return out, xerrors.Errorf("generate random integer from 0-%v: %w", len(s), err)
+	}
+
+	return s[i], nil
+}