feat: link BadDebtRealization with Market entity

[antoncoding]

Link BadDebtRealization with Market entity so we can query bad debt associated with a market like this

{
  markets(first: 5) {
    badDebtRealizations {
      badDebt
    }
  }
}

[antoncoding]

The test subgraph is still not synced, but has some entities already have badDebtRealizations attached to the market that we can verify

Endpoint: https://api.studio.thegraph.com/query/114289/morpho-blue-base/version/latest

Example query

{
  market (id : "0x13c42741a359ac4a8aa8287d2be109dcf28344484f91185f9a79bd5a805a55ae") {
    irm
    totalCollateral
    badDebtRealizations {
      id
      liquidation {
        id
      }
      badDebt
    }
  }
}

Response

{
  "data": {
    "market": {
      "irm": "0x46415998764c29ab2a25cbea6254146d50d22687",
      "totalCollateral": "699946990582152877604",
      "badDebtRealizations": [
        {
          "id": "0x08911a948cdfb0a8c0a44f5d9b1bb44c6f8fe506a1ada8de9c42c7a1a794e817c100000000000000",
          "liquidation": {
            "id": "0x08911a948cdfb0a8c0a44f5d9b1bb44c6f8fe506a1ada8de9c42c7a1a794e817c100000000000000"
          },
          "badDebt": "14581"
        }
      ]
    }
  }
}