Add training service

[HYLcool]

Description

• Add training service (for future training-port in the studio)
• Add training env in the server installing and starting scripts.
• Fix usage of retry_session according to the latest version.
• Add some missing dependencies.

Checklist

Please check the following items before code is ready to be reviewed.

• Code has passed all tests
• Docstrings have been added/updated in Google Style
• Documentation has been updated
• Code is ready for review

[pan-x-c]

/run-unittest

[pan-x-c]

/run-unittest

[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Pending ⏳	Other ❓	Flaky 🍂	Duration ⏱️
13	13	0	0	0	0	0	100ms

Failed Tests

No failed tests ✨

Flaky Tests

No flaky tests ✨

Skipped

No skipped tests ✨

Tests

Test Name	Status	Flaky	Duration
tests/buffer/sql_test.py::TestSQLBuffer::test_create_sql_buffer	✅		1ms
tests/common/config_test.py::TestConfig::test_all_examples_are_valid	✅		1ms
tests/common/config_test.py::TestConfig::test_load_default_config	✅		1ms
tests/common/experience_test.py::TestExperienceConversion::test_batch_conversion	✅		1ms
tests/common/experience_test.py::TestExperienceConversion::test_experience_model_experience_conversion	✅		1ms
tests/common/vllm_test.py::TestModelWrapperSync::test_generate	✅		41ms
tests/common/vllm_test.py::TestModelWrapperAsync::test_generate	✅		39ms
tests/common/vllm_test.py::TestTokenizer::test_assistant_token_mask	✅		1ms
tests/explorer/runner_pool_test.py::RunnerPoolTest::test_runner_pool	✅		13ms
tests/explorer/workflow_test.py::WorkflowTest::test_gsm8k_workflow	✅		1ms
tests/explorer/workflow_test.py::WorkflowTest::test_math_complex_workflow	✅		1ms
tests/explorer/workflow_test.py::WorkflowTest::test_math_fraction_workflow	✅		1ms
tests/explorer/workflow_test.py::WorkflowTest::test_math_workflow	✅		1ms

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