test(cli): add comprehensive CLI test suite and reorganize files

[Pouyanpi]

tests for nemoguardrails CLI

requires #1343

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.78%. Comparing base (2af64d6) to head (0aee5a0).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1339      +/-   ##
===========================================
+ Coverage    71.66%   73.78%   +2.11%     
===========================================
  Files          171      171              
  Lines        17020    17020              
===========================================
+ Hits         12198    12558     +360     
+ Misses        4822     4462     -360     

Flag	Coverage Δ
python	73.78% <ø> (+2.11%)	⬆️

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[Copilot]

Pull Request Overview

This PR adds comprehensive test coverage for the NemoGuardRails CLI and reorganizes the existing test files into a more structured directory layout.

Key changes:

• Move existing CLI tests to a dedicated tests/cli/ directory structure
• Add extensive test coverage for CLI commands including migration, provider management, debugger, and chat functionality
• Fix a potential AttributeError in the verbose logging module when handling log records

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/test_cli_migration.py	Removed - moved to tests/cli/test_migration.py
tests/test_cli.py	Removed - moved to tests/cli/test_cli_main.py
tests/cli/test_migration.py	New comprehensive test suite for CLI migration functionality
tests/cli/test_llm_providers.py	New test suite for LLM provider selection and management
tests/cli/test_debugger.py	New test suite for CLI debugger commands
tests/cli/test_cli_main.py	New test suite for main CLI commands and functionality
tests/cli/test_chat.py	New test suite for chat interface functionality
nemoguardrails/logging/verbose.py	Fix AttributeError when log records lack 'id' attribute

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[tgasser-nv]

Looks good, just a few nits. Curious to learn where Colang 2's syntax is written down to write tests against

[tgasser-nv]

Is the same chat_module used throughout all these tests? Should we create it from scratch in each test to avoid mutations in a previous test changing the response?