add initial version of vg

[bgruening]

FOR CONTRIBUTOR:

• - I have read the CONTRIBUTING.md document and this tool is appropriate for the tools-iuc repo.
• - License permits unrestricted use (educational + commercial)
• - This PR adds a new tool or tool collection
• - This PR updates an existing tool or tool collection
• - This PR does something else (explain below)

[bgruening]

depends a little bit on galaxyproject/galaxy#9593

Test pass locally.

[bgruening]

Its a real green one. Thanks @nsoranzo