Allow feegrant for whitelisted contracts

[zanicar]

We have opened the following issue to address the much requested enhanced fee grant feature:
CosmWasm/wasmd#1571

The discussion is very positive and in the interest of the majority of the Archway Developer Community.

Please feel free to get involved directly on the issue or indirectly via this forum.

[zanicar]

Great news Archway Community, it has been added as a v0.43.0 wasmd milestone!
https://github.com/CosmWasm/wasmd/milestone/32