Integrate the use of a reference schema for the '--sqlite' option (done for --parquet)

[diskontinuum]

Prevent column misalignment, NaN errors and other type incompatibilities also for --sqlite option, by:

1. determining a reference schema for the table columns
2. opening a writer
3. converting all subsequent files to that reference schema)

The functions are already deployed for the --parquet option (merged PR "Parquet_integration #122). This issue hence boils down to hooking existing functionality up for the 'sqlite' backend.

[diskontinuum]

See also the discussion in this pycytominer issue.