fix(pipeline): fixed pipeline create/validate/trigger client code

[joremysh]

Because

• some fields in payload are missing

This commit

• fixed create_pipeline/validate_pipeline/trigger_pipeline client functions

tested on local with code below

name = "test5-2"
client.pipeline_service.create_pipeline(
    name,
    "this is a pipeline for demo",
    {
        "output": {"result": {"title": "result", "value": "${variable.input}"}},
        "variable": {"input": {"instillFormat": "string", "title": "input"}},
    },
    False,
)
client.pipeline_service.validate_pipeline(name, False)
print(
    client.pipeline_service.trigger_pipeline(
        name, [{"input": "hello world"}], [], False
    )
)

output:

[linear]

INS-5096 code generator for client code