node-split: add PoetInfo method to smesher service API PoC

[kacpersaw]

Closes #6478

This pull request introduces a new endpoint to fetch Poet Infos directly from smesher service API

Enhancements to PoET service:

• activation/interface.go: Added the Info method to the PoetService interface to return PoET service information.
• activation/poet.go: Implemented the Info method in the poetService struct to retrieve PoET service information.

Modifications to gRPC server:

• api/grpcserver/v2alpha1/smeshing_identities.go: Updated the SmeshingIdentitiesService to include PoET clients and added the PoetInfo method to return PoET information. [1] [2]
• node/node.go: Passed PoET clients to the SmeshingIdentitiesService during initialization. [1] [2]

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 20.00000% with 16 lines in your changes missing coverage. Please review.

Project coverage is 77.4%. Comparing base (c577b00) to head (60d6b31). Report is 3 commits behind head on node-split-poc.

Files with missing lines	Patch %	Lines
api/grpcserver/v2alpha1/smeshing_identities.go	12.5%	14 Missing :warning:
activation/poet.go	0.0%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## node-split-poc #6480 +/- ## ============================================== Coverage 77.4% 77.4% ============================================== Files 341 341 Lines 45628 45647 +19 ============================================== + Hits 35357 35376 +19 Misses 8156 8156 Partials 2115 2115 ```

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