Store DenomMetaData for every coin/token

[queencre]

Summary

For our client developers and our partners, we need to research and discuss if it is wise/doable to store metadata for all coins/tokens (coming from foreign chains).

References

• Some chains (e.g Injective) provide the data off-chain. Reference this API.
• Bank keeper has SetDenomMetaData function to store denom metadata.

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For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned