[Feature]: Circular Dependency Resolution

[Evanion]

What problem would this feature solve?

Allows certain circular dependencies to resolve (e.g., via proxies or lazy injection), enabling more flexible architectures and parity with frameworks like Angular/NestJS/TypeDI.

Proposed solution or design

Use proxies or lazy getters for constructor-injected dependencies. Detect cycles and inject a proxy that resolves the dependency on first access. Document limitations (e.g., not for immediate use in constructor).

Additional context

See the NexusDI Roadmap: Circular Dependency Resolution for more details and API sketches.