Implement support for Tomcat 10

[Nihlus]

This PR implements support for Tomcat 10, updating some method overrides and removing obsoleted functionality. Most of the changes have been made rather naively, and will probably need some tweaking and/or change requests before they can be merged.

The proposed changes compile fine on a Debian 12 machine with the current stable packages; however, these may not match versions in other distributions.

CC @tjaalton. Closes #68.

[tjaalton]

I wonder if it would be easier to land this to have it next to tomcat-9.0 support? Fedora doesn't even have tomcat10 yet, as you can see from the failing rpm builds.

[Nihlus]

Possibly, though Tomcat 10 support needs modifications to the public API of the common core library, so I'm not entirely sure if it's doable without a major version bump either way. I'd like to hear from the devs on that.

[Nihlus]

I added a way to switch between Tomcat 9 and Tomcat 10 support via two Maven build properties. This necessitated moving Http11NioProtocol to the tomcat-x.0 subprojects, but I think that's an alright tradeoff.