fix(opal): Restructure OPAL-RT clients

Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>

.reuse/dep5

@@ -3,6 +3,6 @@ Upstream-Name: VILLASnode
 Upstream-Contact: Steffen Vogel <post@steffenvogel.de>
 Source: https://fein-aachen.org/en/projects/villas-node/
 
-Files: *.vi *.opal *.dft *.sib *.json *.ipynb *_pb2.py doc/pictures/* doc/favicon.png clients/opal/models/send_receive/eonerc_logo.png clients/rtds/**/*.txt clients/hypersim/*.ecf etc/labs/lab3.pcap packaging/live-iso/files/etc/* flake.lock tests/valgrind.supp packaging/archlinux/villas-node.install
+Files: *.vi *.opal *.dft *.sib *.json *.ipynb *_pb2.py doc/pictures/* doc/favicon.png clients/opal-rt/rtlab-asyncip/models/send_receive/eonerc_logo.png clients/rtds/**/*.txt clients/opal-rt/hypersim-ucm/*.ecf etc/labs/lab3.pcap packaging/live-iso/files/etc/* flake.lock tests/valgrind.supp packaging/archlinux/villas-node.install
 Copyright: 2018-2023, Institute for Automation of Complex Power Systems, RWTH Aachen University
 License: Apache-2.0

clients/CMakeLists.txt

@@ -4,5 +4,5 @@
 # SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
 # SPDX-License-Identifier: Apache-2.0
 
-add_subdirectory(opal)
+add_subdirectory(opal-rt/rtlab-asyncip)
 add_subdirectory(shmem)