UI: Add support for sats, a.k.a. "make sats the standard"

[cd2357]

Allow the user to configure the units for displaying BTC amounts (sats, mBTC, BTC -- just like Electrum Wallet does).

This makes it more intuitive for user to deal with the decimal zeroes in a typical BTC amount.

Assuming the BTC prices tend to rise, this is a good long-term approach. People would deal in smaller and smaller amounts of BTC, which will eventually be harder and harder to represent as BTC in a "human readable" way.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[pazza83]

@cd2357 This looks like a popular suggestion. Maybe make it as a proposal?

[cd2357]

I checked the proposals docs and

What proposals are good for

• Creating an entire new Bisq component or making a significant change to an existing one
• Changing something about the way contributors work together

What proposals are not good for

• Smaller changes to existing components, infrastructure or processes, where a broad consensus of contributors is not required

I think this fits more in the "smaller change to existing components".

Sounds like it could be a good first issue through.