cli commands refactored

[DzmitryPihulski]

cli updated

[codecov]

Codecov Report

❌ Patch coverage is 90.83333% with 11 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
llmsql/_cli/inference.py	91.78%	6 Missing ⚠️
llmsql/__main__.py	0.00%	4 Missing ⚠️
llmsql/_cli/llmsql_cli.py	93.75%	1 Missing ⚠️

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[Quarol]

Running on windows 11 failed (command used: llmsql --help.

The reason is: vLLM is ONLY supportend on Linux, so any import causes the crash.
We need to do a workaround (always making sure only transformers run).
My proposed changed are pushed onto the branch in question.

Another issue is that if we keep provider as a flag (--method) then we will have overload of disjoined flags for both options - vllm and transformers.

Hence my suggestions (in the latest commit):

• vllm and transormers became subcommands - they are not under --method flag anymore
• I did a workaround that does lazy import if linux is detected. It means if other OS is used then vllm_interface will NOT be imported - so there is no crash.

Additional problem (commands ran on my own PC):
CLI is very slow - llmsql --help comm and takes about 6 seconds to output message.

[Quarol]

Please, check the latest commit @DzmitryPihulski . If I got ur "ok", then I will approve the PR.