Include raw stored mana (undecayed) in the address mana balance endpoint (Nova) [low]

[begonaalvarezd]

Description

Priority: low

/api/explorer/v3/balance/[address] returns eg

{
    "totalBalance": {
        "amount": "85567958",
        "mana": {
            "stored": "374782896",
            "potential": "683261"
        }
    },
    "availableBalance": {
        "amount": "85567958",
        "mana": {
            "stored": "374782896",
            "potential": "683261"
        }
    },
    "ledgerIndex": xxxx
}

It would be good to include the undecayed stored mana too so we can show users how much its decayed

Motivation

Provide decay in mana balance

Requirements

Open questions (optional)

Are you planning to do it yourself in a pull request?

No.

[DaughterOfMars]

Implemented by separating the field into stored_mana and decayed_mana which contains both decayed stored and potential.