feat(backend): added hono-rate-limiter

[MathurAditya724]

This PR introduces the following changes -

• [x] Added hono-rate-limiter
• [x] Removed rate-limiter-flexible
• [x] Update the code to use hono-rate-limiter

[MathurAditya724]

Hey @flipvh, how can I run the test? I need to check the implementation.

[flipvh]

@MathurAditya724 Sorry I missed the notifcation for this one (Github notifications are pretty crappy or not? :D)

This is great news. We do not have any tests actually, if that is what you mean. Let us review the changes now and merge it into development if its good!

[MathurAditya724]

Hey 👋🏼 , I just wanted to confirm that we will now merge this branch, https://github.com/cellajs/cella/tree/hono-rate-limiter, instead of this PR.