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

contrib/scripts/tushd

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Copyright (c) 2016-2024 The Hush developers
+# Distributed under the GPLv3 software license, see the accompanying
+# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
+
+# 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"
+
+# ./hushd -ac_name=TUSH -ac_private=1 -gen=1 -testnode=1
+./hushd -ac_name=TUSH -ac_private=1 -ac_supply=55555
+