Reorganize repo: move scripts to contrib/scripts/, clean up .gitignore, untrack backup files

contrib/scripts/hush-arrakis-chain

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Copyright (c) 2016-2024 The Hush developers
+# Resolve binary directory
+SCRIPTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+if [ -f "$SCRIPTDIR/hush-cli" ] || [ -f "$SCRIPTDIR/hushd" ]; then
+    BINDIR="$SCRIPTDIR"
+else
+    BINDIR="$SCRIPTDIR/../../src"
+fi
+cd "$BINDIR"
+
+DEFAULTS=""
+
+# People can just use hushd going forward, but this script makes it
+# more clear what is going on
+HUSH="./hushd"
+$HUSH $DEFAULTS "$@"