unify grub scripts under one directory

new commands are thus,

build grub payloads:
./build grub payload
(formerly ./build payload grub)

build grub utils:
./build grub utils
(formerly ./build module grub)

The scripts is build/module/ will mostly be
deleted. I say mostly, because some of them
are being moved instead.

The deleted ones will be ones that basically
just run "make" in the target directory. They
will be unified, in a follow-up patch.

Signed-off-by: Leah Rowe <leah@libreboot.org>

resources/scripts/build/module/grub

@@ -1,61 +0,0 @@
-#!/usr/bin/env sh
-
-#  helper script: builds GRUB2 source code
-#
-#	Copyright (C) 2014, 2015, 2020, 2023 Leah Rowe <info@minifree.org>
-#	Copyright (C) 2015, 2016 Klemens Nanni <contact@autoboot.org>
-#
-#	This program is free software: you can redistribute it and/or modify
-#	it under the terms of the GNU General Public License as published by
-#	the Free Software Foundation, either version 3 of the License, or
-#	(at your option) any later version.
-#
-#	This program is distributed in the hope that it will be useful,
-#	but WITHOUT ANY WARRANTY; without even the implied warranty of
-#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#	GNU General Public License for more details.
-#
-#	You should have received a copy of the GNU General Public License
-#	along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-
-[ "x${DEBUG+set}" = 'xset' ] && set -v
-set -u -e
-
-main()
-{
-	printf "Building GRUB\n"
-
-	if [ ! -d "grub/" ]; then
-		./fetch grub || exit 1
-	fi
-
-	build_grub
-}
-
-build_grub()
-{
-	(
-	cd grub/ || err "cd"
-
-	# clean up first
-	if [ -d Makefile ]; then
-		make distclean || err "make-distclean"
-	fi
-
-	./bootstrap --gnulib-srcdir=gnulib/ --no-git || err "bootstrap"
-
-	# build
-	./autogen.sh || err "autogen"
-	./configure --with-platform=coreboot || err "configure"
-	make -j$(nproc) || err "make"
-	)
-}
-
-err()
-{
-	printf "%s: error: %s\n" $0 $1
-	exit 1
-}
-
-main $@