feat: excel table support for excel data sources

[tychoish]

Closes #2949

@talagluck can you write the tests for this (e.g. need a worksheet with a table and corresponding tests.)

[talagluck]

I added a worksheet and tests, but I can't get the tests to pass locally. I get

Error while running test `sqllogictests/xlsx` error=test fail: query failed: internal error: cannot execute simple query: db error: ERROR: External error: External error: Table 'users' not found

I tried with a few different tables, but they are all not found.