Create Config struct to hold Network and ApiKey

[Emrys02]

Encapsulating setup parameters (Network target, custom RPC URLs, API keys for providers like Validation Cloud) simplifies client instantiation.

Implementation Guidelines

Key Files: crates/core/src/types/config.rs or crates/core/src/network/config.rs.

• Create a Config struct containing network: Network, rpc_url: Option<String>, and api_key: Option<String>.

Expectations

What done looks like: A unified Config builder that initializes all networking variables centrally.

For any question, reach me on Discord: emry_ss

[samjay8]

@samjay8 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Let me run this for you too, my boss.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @samjay8 to this issue.