Support for Vizual within Mimir

[okennedy]

At some point, we should migrate the implementation of Vizier's spreadsheet-versioning language, Vizual into Mimir.

Benefits

• Operations in Vizual correspond mostly to simple DDL/DML operations, and many are already defined as OperatorTransforms.
• Putting it in Mimir allows us to leverage Mimir's parser for spreadsheet expressions
• Helping Mimir to understand Vizual would make it easier to push schema changes through operations in the notebook, since Mimir already has tools for batch renaming.

1. create a Vizual case class with a JSON codec and operations for each of:

• Reorder columns (Project)
• Remove column (Project)
• Add Column (Project adding a column hardcoded to NULL)
• Rename Column (Project)
• Remove row (Select on ROWID)
• Add row (Union ALL with HardTable)
• Sort
• Update Cell/Range (Project with CASE)
• Annotate (Project with DataWarning)
• Filter (Select)

2. Add a method that takes a table and a sequence of Vizual operations and, using re-enactment (see discussion here) produces a query that simulates applying the operations.

3. Add a Vizual operation to the Vizier API.