tests: ipc: ipc_sessions: Implementation#1

rakons merged 1 commit intodoki-nordic:icmsg-1.1-ncsdoki-nordic/sdk-zephyr:icmsg-1.1-ncsfrom

rakons:NCSDK-30360-ipc_sessions_testrakons/fw-nrfconnect-zephyr:NCSDK-30360-ipc_sessions_testCopy head branch name to clipboard