bug: rust fetch return types not qualified properly

[wjthieme]

introduced by #299. Tests did not catch this because the functions/types are behind a feature

• Fixed the bug with imports not being resolved
• Fixed an issue with errors from fetch functions not being converted
• Added the fetch feature to the system example (with required optional dependencies)

[changeset-bot]

🦋 Changeset detected

Latest commit: ae52cc1

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

This PR includes changesets to release 2 packages

Name	Type
@codama/renderers-rust	Patch
@codama/renderers	Patch

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[febo]

Looks good. A comment not directly related to this PR: would it make sense for the fetch_all_* variants to take a Vec<&Pubkey> since the fetch_ ones take a &Pubkey?

[wjthieme]

@febo I believe solana_client crate does &Pubkey for get_account and &[Pubkey] for get_multiple_accounts. Would it make sense to match that?

(Changing would probably be fine given this has never worked in a live version even though it would strictly be a breaking change)

[febo]

@febo I believe solana_client crate does &Pubkey for get_account and &[Pubkey] for get_multiple_accounts. Would it make sense to match that?

(Changing would probably be fine given this has never worked in a live version even though it would strictly be a breaking change)

Agreed, let's match the API of solana_client.

[wjthieme]

Agreed, let's match the API of solana_client.

Fixed!

[lorisleiva]

Thank you! Just waiting on Febo's approval and LGTM.

Would you mind just rebasing the PR? Sorry I just merged another big PR and it created small conflicts.

[febo]

Looks good, thanks!