New RPC: z_getbalanceforaddress

[str4d]

Usage: z_getbalanceforaddress ADDRESS MINCONF

• Returns a dictionary (with space for extending with metadata later):
  • pools
    • POOL_NAME (for each pool included in the address)
      • valueZat
• Empty pools are omitted.
• Also accepts full viewing keys, including UFVKs.

[LarryRuane]

Would this be a reasonable format (example) for the return string:

{
    "pool": {
        "transparent": {
            "amount": 7000
        },
        "sprout": {
            "amount": 1225
        },
        "sapling": {
            "amount": 31
        },
        "orchard": {
            "amount": 4241
        }
    }
}

We would omit entries for which the amount is zero. This is somewhat "wordy" but does leave room for metadata outside the individual pools, and also leaves room for per-pool data beyond just amount.

Should there be an optional inZat argument after minconf to specify the units (zats or zec), as z_getbalance has (and its default there is false)? Or just always return Zats?

[str4d]

What you've outlined almost matches the structure I originally suggested in the top post. If you changed pool to pools and amount to valueZat then it will be identical.

[str4d]

Closed by #5500, merged into #5419.