Migrate to the library version of EdDSA-Java

[str4d]

The EdDSA-Java library was developed outside I2P and then pulled into the core codebase. However, the packages are identical, so a third party wanting to depend on both i2p.jar and some other package that depends on eddsa-java.jar will need to do more complex package exclusions in order to get things working.

We should not bundle net.i2p.crypto.eddsa inside the i2p.jar published on Maven Central, and instead add a dependency on net.i2p.crypto:eddsa. The i2p.jar bundled within the router itself should probably continue to contain that code for now, but we should also think about fixing this in future (e.g. if we start using the Gradle scripts for packaging, then pulling in external dependencies is trivial).

[zzz]

Should be a simple change for Maven, and we already have other dependencies, should be easy. Changing component and setting for .34 for now, but your call ofc.