bsddialog: import version 0.1

Import bsddialog 0.1 Utility and Library, fully refatorized, API stable,
manuals completed, easier to maintain and improve.

Update deps for new API:
add mixedgauge consts, delete __DECONST and add bsddialog_geterror()
info to avoid silent errors

• tzsetup
• kbdmap
• distextract

Differential Revision: https://reviews.freebsd.org/D34066