Add column attributes to notebook export

[shangyian]

Summary

When exporting a node to a notebook, we should also generate client code for setting column attributes on the node. This PR adds that functionality, which gets us to an export that contains a full representation of a node + all its metadata.

An example of the missing client code:

repair_order_details.set_column_attributes(
    "repair_type_id",
    [
        ColumnAttribute(namespace="system", name="dimension"),
    ],
)

Test Plan

• [x] PR has an associated issue: #1078
• [x] make check passes
• [x] make test shows 100% unit test coverage

Deployment Plan

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