dbcopy: CLI tool to bare-copy a database into another one

[christianparpart]

• Create an API to construct SQL migration plan (create table instructions) from an existing schema (reuse existing API to fetch the schema)
• Use this series of SQL migration objections to recreate the table schema in the destination
• bulk-read each table from the source, and bulk-write them into the destination - this may need some convenience API to generically & efficiently (select/)insert (aka. "copy") the table
• ensure some progress-report interface is being passed, such that the dbcopy/CLI/GUI can hook into it

CLI syntax

could possibly look like this:

dbcopy [--quiet] --from "DSN=SourceDSN;Uid=User;Pwd=Secret" --to "DSN=TargetDSN;Uid=User;Pwd=Secret"

So it should be trivial to copy from an MS SQL into an sqlite, and then repopulate anywhere else.