Uncaught exception when using single cell ranges

[mharrisb1]

Still tracking down the root cause. Will update this issue

Introduced from #57

[mharrisb1]

Okay, I've found the issue.

In this snippet:

duckdb_gsheets/src/gsheets_read.cpp

Lines 213 to 216 in 708512c

	idx_t start_index = header ? 1 : 0;
	if (start_index >= sheet_data.values.size()) {
	return bind_data;
	}

We return early if start_index >= sheet_data.values.size(). At this point the ReadSheetBindData attributes return_types and names are empty vectors.

When the bind method eventually gets called by DuckDB it will fail this check:

https://github.com/duckdb/duckdb/blob/19864453f7d0ed095256d848b46e7b8630989bac/src/planner/binder/tableref/bind_table_function.cpp#L220-L223

The fix would be to ensure that we have established the column name and types before exiting early so DuckDB does not throw the error we've observed.