Initial work on binary-sop

This module is intended to allow the use of SOP command line applications
such as sqop, pgpainless-sop, etc. as drop-ins for sop-java.

binary-sop/src/main/java/sop/binary/operation/package-info.java

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * Bindings for SOP subcommands to a SOP binary.
+ */
+package sop.binary.operation;