chore: migrate-to-file-data-source

[tractorss]

Migrates subgraph to file datasource from ipfs.cat

⚠️ Will break the services/queries relying on the this subgraph for getting evidence or item's data.

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Need to update the gql queries for entities

1. LItem
2. Evidence

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The ipfs data (now metadata ) can be accessed from the field metadata in the affected entities.

Example of updating gql query for getting evidence or item's metadata after this change :

 { evidences{ metadata{ title description } } litems{ metadata{ props{ label } key0 keywords } } } 

Test subgraph deployed at :- https://thegraph.com/studio/subgraph/gtcr-test-subgraph/logs

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Next steps :-

1. Migrate from hosted service to studio. (The test subgraph is deployed on studio, but the changes have not been made in this PR to migrate to studio)
2. Update services/ frontends relying on this subgraph

[sonarqubecloud]

Quality Gate failed

Failed conditions
29.1% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud