BREAKING: rename `vtable_max_rows` and `vdbe_max_steps` sql parameters

Summary

Rename SQL parameters:

• vtable_max_rows -> sql_motion_row_max
• vdbe_max_steps -> sql_vdbe_opcode_max.

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• Close #1281 (closed)
• Cherry-pick to: none
• Docs follow-up: docs#447 (closed)
• See also: #1170 (closed)
• Changelog is updated