Indexer: Ingest `TaskRegistered` events

[EDOHWARES]

Description

The indexer needs to listen to the Stellar network for TaskRegistered events emitted by our contract and save them to the DB.

Requirements

• Use the Stellar SDK to stream ledger events.
• Filter for events from the SoroTask contract ID.
• Parse the event payload and insert into PostgreSQL.

[DevRushd]

@DevRushd has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello Maintainer. I can resolve this issue if you can assign it to me. Thank you

ℹ️ Repo Maintainers: To accept this application, review their application or assign @DevRushd to this issue.