Add dev tools

tools/README.md

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+# Dev Tools
+
+This directory contains some tools we use during development. They're not
+normally used with the loader generator in any way. They're messy, buggy,
+quick and dirty but often helpful ;)

tools/rebuild_all.sh

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+#!/usr/bin/env bash
+# Removed all existing images and builds all permutations of the ones we test. We usually use this tool just after
+# executing tools/make_all.sh from the LKM repo. The we usually do something akin to:
+#    sftp dropbox@vm-003.local:/_images/rp-img/ <<< 'put images/*.gz'
+# When you are executing this script do it from the root of the repo dir like ./tools/rebuild_all.sh
+
+rm images/*.img images/*.gz
+
+set -euo pipefail
+BRP_DEBUG=1 BRP_USER_CFG=$PWD/user_config-ds3615.json ./build-loader.sh 'DS3615xs' '6.2.4-25556' "$PWD/images/rp-3615-v6.img"
+BRP_DEBUG=1 BRP_USER_CFG=$PWD/user_config-ds3615.json ./build-loader.sh 'DS3615xs' '7.0-41222' "$PWD/images/rp-3615-v7.img"
+BRP_DEBUG=1 BRP_USER_CFG=$PWD/user_config-ds918.json ./build-loader.sh 'DS918+' '6.2.4-25556' "$PWD/images/rp-918-v6.img"
+BRP_DEBUG=1 BRP_USER_CFG=$PWD/user_config-ds918.json ./build-loader.sh 'DS918+' '7.0-41890' "$PWD/images/rp-918-v7.img"
+gzip "$PWD/images/rp-3615-v6.img"
+gzip "$PWD/images/rp-3615-v7.img"
+gzip "$PWD/images/rp-918-v6.img"
+gzip "$PWD/images/rp-918-v7.img"