[Feature] Add vllm inference example

[wheresmyhair]

Description

1. Add vllm inference example
2. Change detokenize to decode_inference_result to make it clearer

Tests

1. MemorySafeVLLMInference test
   

2. Example sh test
   
   Note that the fetal python error comes from the killing signal. This will not affect the inference, as the results are already saved:
   

[research4pan]

The major part looks good to me. Some minor problems before merging into main branch.

scripts/run_vllm_inference.sh

• [Bug] line 59: remove absolute path, which contains personal information.
• [Style] line 77: maybe used a fixed log name?

src/lmflow/args.py

• [Style] line 963: better to be enable_decode_inference_result to indicate that this is a flag.

src/lmflow/pipeline/utils/memory_safe_vllm_inference.py

• [Style] line 57: better to be enable_decode_inference_result to indicate that this is a flag.

src/lmflow/pipeline/vllm_inferecer.py

• [Style] line 87, 102, 112, 117, 128: better to be enable_decode_inference_result to indicate that this is a flag.
• [Style] line 204: add comments, or RETURN_CODE_ERROR_BUFFER = 134 to make it easier to read.

[wheresmyhair]

Changes made, tests passed.

Tests

1. Example sh test
   

2. MemorySafeVLLMInference test
   

[research4pan]

LGTM