Subgraph for Treasure and TreasureMarket

[pi0neerpat]

• [ ] List of all tokens by owner. Watches for transfer and minting events. Ie query owner 0xabc123 and get a list of tokens they own [1, 7, 8]
• [ ] List of tokens listed for sale, includes price and who listed it. [{tokenId: 5, price: , saleCurrency: eth/0xUsdc},]
• [ ] Track transfers and sales of each token. Watches market + transfers. Ie token 5 has been sold for X amount on Y day.
• [ ] Query token id to get current price (if for sale), meta data, current owner
• [ ] Query token id to get a history of previous transfers / sales: [who sold it, who got it, time of transfer, price/0]

[pi0neerpat]

@step21 Adding here, so you can link to this in your PR