Add csrf cookie for login flow submission

[vizv]

Related issue(s)

#2003 (comment) doesn't work without allowing SDK pass a CSRF cookie, however I only fixed endpoint for login, but they are the similar issues.

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
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  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

I can understand it's not recommend to use Go SDK to proxy the request, and login flow submit HTTP API is not stable yet, so feel free to reject this PR. However please remove browser login flow for SDK since it's broken right now (without passing CSRF cookie, the CSRF token will be rejected anyway).

[CLAassistant]

All committers have signed the CLA.

[vizv]

I have tested my change works after regenerated SDK for go, by forward cookie with csrf_token_ prefix. I'm able to login using Go SDK with browser flow.

[aeneasr]

Thank you very much, I added the rest of them here:

#2467

:)

[vinckr]

Hello @vizv
Congrats on merging your first PR in Ory 🎉 !
Your contribution will soon be helping secure millions of identities around the globe 🌏.
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