chainclients: Add assets to cosmos asset mapping
This adds:
- 3 liquid staking tokens for ATOM,
- 4 stablecoins,
- native gas tokens for Neutron & chains that issue stablecoins
This whitelist probably has to be version-gated, though, right?
And should the thorchain symbol include the name of the chain they were IBC-bridged from? Should the symbol for Tether be GAIA.USDT or GAIA.KAVA.USDT?
Edited by dyns