Zombienet includes AssetHub

[luispdm]

As an XCM dev I want AssetHub in Zombienet so can test XCM transfers

ACCEPTANCE:

• I can see AssetHub in polkadot.js locally

[luispdm]

Useful resources:

• AssetHub docs
• Zombienet XCM guide (by Astar)
• Zombienet docs