feat: query client ID in app datasources

[eliobischof]

With these changes, the apps client IDs are stored in their datasources state: zitadel_application_oidc, zitadel_application_api.

Definition of Ready

• [x] Short description of the feature/issue is added in the pr description
• [ ] PR is linked to the corresponding user story
• [x] Acceptance criteria are met
• [x] All open todos and follow ups are defined in a new ticket and justified
• [x] Deviations from the acceptance criteria and design are agreed with the PO and documented.
• [x] No debug or dead code
• [x] My code has no repetitions
• [x] All non-functional requirements are met
• [x] The generic lifecycle acceptance test passes for affected resources.
• [x] Examples are up-to-date and meaningful. The provider version is incremented.
• [x] Docs are generated.
• [x] Code is generated where possible.