Libraries do not go into /automation/jsr223/. They go into /automation/lib/. The location of the libraries can be modified, but I’m still working out how this might work with the bundle.
That is what pip provides… Installing Packages - Python Packaging User Guide. Just be careful and backup everything up!
You’re beta testing the Jython bundle, so this may not be possible, since you will need to install it first using pip. If you search the forum, there have been some discussions, but with using manual or standalone installs of Jython. I’m working on some instructions for using pip with Jython and OH, but I haven’t tried yet while using the bundle.
However, you can probably just use the HTTP actions… Actions — openHAB Helper Libraries documentation. If this does not suit your purposes, then explain what you intend to use it for and maybe someone can help.