libgnt/libgnt

d72061c0dbf3
Setup the devenv and bump the meson requirement to 0.58.0

Testing Done:
changed some colorpairs in `build/config/gnt/gntrc` to verify that it was loading that file.

Reviewed at https://reviews.imfreedom.org/r/1571/
#include <ncurses.h>
int main()
{
int ch;
initscr();
noecho();
cbreak();
refresh();
WINDOW *win = newpad(20, 30);
box(win, 0, 0);
prefresh(win, 0, 0, 0, 0, 19, 29);
doupdate();
while ((ch = getch())) {
printw("%d ", ch);
refresh();
}
endwin();
return 0;
}