Make `max_decoding_message_size` configurable

[lxfind]

What problem are you trying to solve?

My application sends a large amount of data to tokio console and the default limit (4M) is too small.
It triggered the following error in tokio-console:

WARN tokio_console::conn: error from stream status=status: OutOfRange, message: "Error, decoded message length too large: found 206116357 bytes, the limit is: 4194304 bytes", details: [], metadata: MetadataMap { headers: {} }

How should the problem be solved?

It would be nice to be able to specify max_decoding_message_size in command line (or through env var) so that it works with large data. I can add it if this sounds like a good idea.

Any alternatives you've considered?

I don't think there is another way.

How would users interact with this feature?

example:

./tokio-console --max_decoding_message_size_mb 1024

Would you like to work on this feature?

yes