Require all create actions to authenticate user.

[rudzainy]

To prevent spams.

• [x] user (email / google)
• [x] link (must be registered)
• [ ] short link (captcha)

Ref:

• https://medium.com/@umair.khalid_87725/rails-7-recaptcha-854d19944911
• https://github.com/ambethia/recaptcha

[rudzainy]

seems like we have to do something on the backend side for recaptcha...