fix: add missing HTTP error types

[NeelMalwatkar]

Check Existing Issues

• I have searched the existing issues and discussions.

Problem Description

Right now, only following error codes exist:

• 400 BadRequest
• 401 Unauthorized
• 403 Forbidden
• 404 NotFound
• 503 ServiceUnavailable

Errors missing:

• 405 Method Not Allowed
• 409 Conflict
• 410 Gone
• 415 Unsupported Media Type
• 422 Unprocessable Entity
• 429 Too Many Requests
• 500 Internal Server Error
• 502 Bad Gateway
• 504 Gateway Timeout

Desired Solution you'd like

Add error structs for the remaining common HTTP status codes.

Additional Context

No response