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feat: add coin selection and spending via bins or buckets (#7584)

Description
---

Add range limit coin-join:
- Added an unspent output coin distribution gRPC method
('CoinHistogramRequest'), whereby the wallet will return the amount and
value of coins in a pre-set range of buckets.
- Added a range limit coin-join gRPC method ('RangeLimitCoinJoin') to
the wallet, whereby the user can specify the minimum target amount,
maximum number of inputs, dust lower bound (inclusive), dust upper bound
(exclusive) and fee. Transaction size will be limited to the specified
maximum number of inputs, and multiple outputs will be created according
to the minimum target amount. All the inputs in the range will be spent,
unless the total available amount does not meet the minimum target
amount.

Closes #7582.

Motivation and Context
---
See #7582.

How Has This Been Tested?
---
System-level testing

gRPC **CoinHistogram** method
```
{
  "buckets": [
    {
      "count": "0",
      "total_amount": "0",
      "lower_bound": "0",
      "upper_bound": "1000"
    },
    {
      "count": "0",
      "total_amount": "0",
      "lower_bound": "1000",
      "upper_bound": "100000"
    },
    {
      "count": "2",
      "total_amount": "1165548",
      "lower_bound": "100000",
      "upper_bound": "1000000"
    },
    {
      "count": "158",
      "total_amount": "1455989209",
      "lower_bound": "1000000",
      "upper_bound": "1000000000"
    },
    {
      "count": "0",
      "total_amount": "0",
      "lower_bound": "1000000000",
      "upper_bound": "100000000000"
    },
    {
      "count": "0",
      "total_amount": "0",
      "lower_bound": "100000000000",
      "upper_bound": "21000000000000000"
    }
  ]
}
```

gRPC **RangeLimitCoinJoin** method

In this example, two transactions were created, bounded by the 350 input
size limit. gRPC client view:

<img width="897" height="396" alt="image"
src="https://github.com/user-attachments/assets/6c5ae857-8a01-4c90-9c55-1eee2fbd... (continued)

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Source Files on job 19468834672.1