[ELPA] New package: jarchive

[Danny Freeman]

Hello,

I would like to submit a new package to elpa called "jarchive".

Jarchive extends Emacs to allow navigation into JVM project dependencies
located within .jar file archives. It is intended to be paired with lsp
clients like eglot while connected to language servers for JVM
languages. With this package installed and eglot running, using commands
like `xref-find-definitions' on symbols defined in jars will jump to a
new buffer containing the contents of the archived file. Without this
package, Emacs opens up an empty buffer instead of the intended source
file.

The package can be found here: https://git.sr.ht/~dannyfreeman/jarchive

I've tried my best to make sure everything is up to snuff.
- package-lint-current-buffer does not report errors
- checkdoc passes
- copyright notice in the file is assigned to FSF
- copyright papers signed

I also have a patch that adds a new entry to the `elpa-packages` file in
the elpa repository, but that's the most I can do since I don't have any
kind of access to the remote repo. See attached!

0001-elpa-packages-jarchive-New-package.patch
Description: jarchive package patch for elpa repository

Let me know if there is something I missed, or if there are any
questions I can answer.

Thank you!
-- 
Danny Freeman