NOISSUE - Improve SDK initialization

[SammyOina]

What type of PR is this?

What does this do?

• New Features

  • Enhanced error handling across various commands, ensuring early exits on connection issues.
  • Introduced a new gRPC-based architecture for improved client-server interactions.

• Bug Fixes

  • Improved error messages for file reading and command execution failures.

• Documentation

  • Updated command structures and error handling mechanisms to provide clearer user feedback.

• Tests

  • Streamlined test initialization for CLI instances without altering test logic.

Which issue(s) does this PR fix/relate to?

Have you included tests for your changes?

Did you document any new/modified feature?

Notes

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 53.65854% with 19 lines in your changes missing coverage. Please review.

Project coverage is 57.69%. Comparing base (d3636de) to head (83a3557). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cli/sdk.go	0.00%	14 Missing :warning:
cmd/cli/main.go	0.00%	4 Missing :warning:
cli/attestation.go	90.90%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #302 +/- ## ========================================== + Coverage 57.00% 57.69% +0.69% ========================================== Files 57 57 Lines 4577 4598 +21 ========================================== + Hits 2609 2653 +44 + Misses 1699 1679 -20 + Partials 269 266 -3 ```

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