Add rate limiting to activation, activation code request, and TOTP setup endpoints (#6232)

* Implement rate limiting

* Increase activation request limit for e2e_test environment

* Refactor activation request limit

* Update activation request limit condition to include :ce_test environment

* Refactor rate limits for activation and TOTP setup in e2e_test environment

* Reduce activation request limit interval from 10 minutes to 1 minute

* Refactor rate limits and adjust limits and intervals for different environments

* Refactor is_super_admin? fn to super_admin?

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Co-authored-by: Artur Pata <artur.pata@gmail.com>