Add missing copyright/license headers

tools/cmake/check-for-sdkconfig-changes.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2023 jacqueline <me@jacqueline.id.au>
+#
+# SPDX-License-Identifier: GPL-3.0-only
+
 SDKCONFIG=$PROJ_PATH/sdkconfig
 SDKCONFIG_COMMON=$PROJ_PATH/sdkconfig.common
 if [ ! -f "$SDKCONFIG" ]; then

tools/collate/mkcollator.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2023 jacqueline <me@jacqueline.id.au>
+#
+# SPDX-License-Identifier: GPL-3.0-only
+
 set -eu
 
 if [ -z "${2:-}" ]; then

tools/fonts/mkfonts.sh

@@ -1,4 +1,9 @@
 #!/bin/sh
+
+# SPDX-FileCopyrightText: 2023 jacqueline <me@jacqueline.id.au>
+#
+# SPDX-License-Identifier: GPL-3.0-only
+
 # To install this tool:
 # npm i lv_font_conv -g
 fusion_12() {

tools/luals-gendoc/gendoc.lua

@@ -1,3 +1,7 @@
+-- SPDX-FileCopyrightText: 2023 jacqueline <me@jacqueline.id.au>
+--
+-- SPDX-License-Identifier: GPL-3.0-only
+
 #!/usr/bin/env lua
 
 local json = require "json"