Add support for resources in javadoc jars and make variable substitution in javadoc arguments

[vinnybod]

There's two use cases I'm trying to account for here.

1. I need to add resources to the javadoc jar such as a LICENSE file.
2. I need to send a --define variable to the javadoc generator so that the maven_version variable I have set will appear in the <title> of the generated html. rules_jvm_external already supports the same type of substitution on the coordinates attribute.

java_export(
    name = "lib",
    maven_coordinates="com.example:lib:$(maven_version)",
    ...
    javadocopts=["-windowtitle", "$(maven_version)"],
    doc_resources = ["//:LICENSE"]
)

[vinnybod]

The CI failures seems unrelated.

ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host
--
  | 🚨 Error: The command exited with status 1

[shs96c]

LGTM. The GH UI is telling me that this has merge conflicts. Once those are resolved, I'll merge. Thank you for the PR!

[shs96c]

Strictly speaking, these a ZipUtils, but that's nit picking.

[vinnybod]

@shs96c Thanks for your review.

Apologies, but I had to reopen this PR from a different org due to permission changes. I made the update to rename JarUtils

#1238