Added a forward-delete fallback to bind Delete key

Delete key (of Fn+Delete on Mac) would print "~" instead of deletion.

lib/key-bindings.zsh

@@ -53,6 +53,10 @@ fi
 bindkey '^?' backward-delete-char                     # [Backspace] - delete backward
 if [[ "${terminfo[kdch1]}" != "" ]]; then
   bindkey "${terminfo[kdch1]}" delete-char            # [Delete] - delete forward
+else
+  bindkey "^[[3~" delete-char
+  bindkey "^[3;5~" delete-char
+  bindkey "\e[3~" delete-char
 fi
 
 # Edit the current command line in $EDITOR