use spdlog for logging in ws + unittest + remove un-needed mutex

third_party/spdlog/tests/CMakeLists.txt

@@ -0,0 +1,29 @@
+project(spdlog-utests CXX)
+
+find_package(Threads REQUIRED)
+
+set(SPDLOG_UTESTS_SOURCES
+    test_errors.cpp
+    test_file_helper.cpp
+    test_file_logging.cpp
+    test_misc.cpp
+    test_pattern_formatter.cpp
+    test_async.cpp
+    includes.h
+    test_registry.cpp
+    test_macros.cpp
+    utils.cpp
+    utils.h
+    main.cpp
+    test_mpmc_q.cpp
+    test_sink.h
+    test_fmt_helper.cpp)
+
+add_executable(${PROJECT_NAME} ${SPDLOG_UTESTS_SOURCES})
+target_link_libraries(${PROJECT_NAME} PRIVATE Threads::Threads)
+target_link_libraries(${PROJECT_NAME} PRIVATE spdlog::spdlog)
+
+file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/logs")
+
+enable_testing()
+add_test(NAME ${PROJECT_NAME} COMMAND ${PROJECT_NAME})