Draft: Bazel build system

This pr introduces bazel as build system.

However I was unable to build the examples on Mac. There is a difference in including <curses.h> vs <ncurses.h>.

curses.h	ncurses.h
ld linker error about undefined symbols	conflicting types for 'unctrl' This seems to be a redefinition that is originating in the file unctrl.h, where @NCURSES_SP_FUNCS@ is 1 Maybe that problem is a version mismatch between MacOs/Homebrew and bzlmod's ncurses module