Adds new Decibel Vault EA

[mohamed-mehany]

Closes OPDATA-5855

Description

New External Adapter (decibel-vault-adapter) that computes share prices for Decibel Vaults on Aptos. The adapter reads two on-chain view functions (get_vault_net_asset_value and get_vault_num_shares) from the Decibel vault module and computes share_price = (NAV * 10^output_decimals) / total_shares.

Changes

• Added new @chainlink/decibel-vault-adapter package (DECIBEL_VAULT)

Steps to Test

1. Unit tests
2. Integration tests
3. Local server curl test:

   curl -X POST http://localhost:8080 \
     -H "Content-Type: application/json" \
     -d '{"data":{"endpoint":"share-price","vault_object_id":"0x06ad70a9a4f30349b489791e2f2bcf58363dad30e54a9d2d4095d6213d7a9bf9"}}'

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: b6d96c2

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

This PR includes changesets to release 1 package

Name	Type
@chainlink/decibel-vault-adapter	Major

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