Extend VDWCorrection to accept all version options supported by external_libs/dftd3.

This MR extends the VDWCorrection input option to accept all version inputs supported by external_libs/dftd3. The old vdw_d3 is renamed to be vdw_d3_bj, which is consistent with the version passed to dftd3.

This closes issue #1104 (closed) opened by @samusake

Note, I have not added any tests for the additional functionality.