Add captcha to Forgot Password requests

[DanilochTop]

Motivation: #299

This PR aims to add captcha to forgot password requests on the front end, and do some changes on the back end to support this feature.

Detailed changes

• Added hcaptcha box to the forgot password page.
• Changed the forgot password page to work with forms instead of using JS to handle inputs, so we can pass the hCaptchaResponse automatically.
• Added success and error message boxes instead of alert.
• Added cookie support to form input, so the user don't need to input the credentials again.
• Created a forgotPassword function in util module to handle requests/responses in a better way.

I also created a PR in the account server repository to support captcha, because it's verified there.

Any bugs, feedback or suggestions just message me! 😄