refactor(sqlsmith): refactor sqlsmith using http client

[b41sh]

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Summary

• refactor sqlsmith using http client, remove bendsql client to reduce dependence.
• generate random geometry expr.
• fix sort row convert panic caused by unsupported types.

fixes: #[Link the issue here]

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[TCeason]

refactor sqlsmith using mysql client, remove bendsql client to reduce dependence

Why do this?

[TCeason]

LGTM