Consider making ContentTooLargeException extend HttpStatusException

[ikhoon]

Suggested by @dlvenable (#5565)

The ContentTooLargeException does not inherit from HttpStatusException. We currently have a block of code that handles HttpStatusException exceptions by looking to see if it is a client or server error. Can we make ContentTooLargeException inherit from HttpStatusException?

ContentTooLargeException represents 413 status so, I think, we can make ContentTooLargeException extend HttpStatusException to streamline exception handling logic.

[ikhoon]

I realized that ContentTooLargeException can't simply extend HttpStatusException because HttpStatusException is in server package but ContentTooLargeException is in common.

It seems like this issue should be considered in Armeria 2.0.

[minwoox]

I believe that we don't want to make ContentTooLargeException extend HttpStatusException.
See this comment: #5565 (comment)