[chain] GRCx (GRC20 / GRC721 / …) Realm Improvements

[zivkovicmilos]

Description

This effort is a blanket issue for improvements to the existing GRC20 / GRC721 Realm implementations, as outlined by our implementation partners (grantees / the community).

Successful outcome of this effort:

• The backlog of GRC-reported issues is gradually minimized

[Kouteki]

Todo: discuss the naming convention for GRCs

[Kouteki]

• GRC20 capability is a blocker for the mainnet launch
• GRC721 is highly desired, but not a blocker for the mainnet launch. If you're interested in contributing, this could be a great issue to tackle.