Feat/OPDATA-6509 implied price decimals

[mmcallister-cll]

Closes #OPDATA-6509

Description

Adds optional outputDecimals, operand1Decimals, operand2Decimals input params to computedPrice endpoint which can used to scale result to a number of output decimals based on input decimals.

Changes

• Added outputDecimals, operand1Decimals, operand2Decimals input params
• Updated result processing to scale result by necessary number of decimals to achieve outputDecimals -- this is different based on operation
• Added tests for new functionality

Steps to Test

1. yarn test implied-price
2. test with the following payload: Remove the outputDecimals, operand1Decimals, operand2Decimals to get the existing behaviour output.

{
    "data": {
        "endpoint": "computedPrice",
        "operand1Sources": [
            "data_engine"
        ],
        "operand1Input": "{\"endpoint\":\"redemptionRate-v7\",\"feedId\":\"0x0007621b6f5eb0b5bd5a8bb3d52902b3e19498ba45781e5ddf92ce7e03d7ecef\",\"resultPath\":\"exchangeRate\"}",
        "operand1Decimals": 18,
        "operand2Sources": [
            "data_engine"
        ],
        "operand2Input": "{\"endpoint\":\"crypto-v3\",\"feedId\":\"0x0003fb73b717523a65721ee943f35ee7ca447dc623433c0f645126b7721c57d9\",\"resultPath\": \"price\"}",
        "operand2Decimals": 18,
        "operation": "divide",
        "outputDecimals": 18
    }
}

Quality Assurance

• If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant infra-k8s configuration file.
• If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant adapter-secrets configuration file.
• If a new adapter was made, or a new endpoint was added, update the test-payload.json file with relevant requests.
• The branch naming follows git flow (feature/x, chore/x, release/x, hotfix/x, fix/x) or is created from Jira.
• This is related to a maximum of one Jira story or GitHub issue.
• Types are safe (avoid TypeScript/TSLint features like any and disable, instead use more specific types).
• All code changes have 100% unit and integration test coverage. If testing is not applicable or too difficult to justify doing, the reasoning should be documented explicitly in the PR.

[changeset-bot]

🦋 Changeset detected

Latest commit: c461a01

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@chainlink/implied-price-test-adapter	Minor

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