XCM specific configuration.

[darkforest0202]

The following XCM configuration is needed for Kreivo and Virto parachains:

• For the native token (DOT/KSM) the relay chain should be recognized as a reserve (not asset hubs).
• For other fungible assets, Asset Hubs parachains should be the reserve.

[olanod]

Adding to point 2, should we add the remote account conversion that was added recently so users in our parachain can act on the assets hub with their own accounts instead of every asset being locked in the parachain's sovereign account?

[darkforest0202]

Depends on #254

[darkforest0202]

Facing an error at the moment when reserve transferring an asset from statemine to kreivo:

ERROR: UntrustedReserveLocation

Investigation is on going.

[darkforest0202]

Adding to point 2, should we add the remote account conversion that was added recently so users in our parachain can act on the assets hub with their own accounts instead of every asset being locked in the parachain's sovereign account?

#260