Allow for a start block value when doing a node rescan.

[destrys]

I'm submitting a…

• Regression (a behavior that used to work and stopped working in a new release)
• Bug report
• Feature request
• Documentation issue or request
• Support request

Expected Behavior

A user should be able to reduce the time of a rescan if they know that their wallet has no transaction below a certain block number.

Current Behavior

There is no option to limit the rescan, it starts from block zero, meaning a rescan can take hours.
Ref: https://twitter.com/dlawnroac/status/1269232935170957312

Possible Solution

If it's not possible with importmulti we may need to use rescanblockchainwhich does have a start_height parameter.

[jevidon]

This issue has been migrated to the new caravan monorepo: caravan-bitcoin/caravan#68