"built-in" Sqllogictest system commands

Scripts (executables) in this directory are expected to be used as system commands in sqllogictests. You can use any language like bash, python, zx.

They will be loaded in PATH by risedev slt, and thus function as kind of "built-in" commands.

Only general commands should be put here. If the script is ad-hoc (only used for one test), it's better to put next to the test file.

See the connector development guide for more information about how to test.