Add user+pass login and 2fa support

utils.go

@@ -0,0 +1,24 @@
+package libkiwi
+
+import (
+	"context"
+
+	"gitgud.io/yats/cerberus"
+)
+
+func (kf *KF) solveKiwiFlare(ctx context.Context) error {
+	c, err := cerberus.NewChallenge(ctx, kf.client, kf.domain.String())
+	if err != nil {
+		return err
+	}
+	s, err := cerberus.Solve(ctx, c)
+	if err != nil {
+		return err
+	}
+	_, err = cerberus.Submit(ctx, kf.client, s, "/")
+	if err != nil {
+		return err
+	}
+
+	return nil
+}