Switch to cmake + vcpkg, builds on linux, windows needs verification.

Code has been modified to be portable.

CMakeLists.txt

@@ -0,0 +1,30 @@
+cmake_minimum_required(VERSION 3.21)
+
+project(pgLab LANGUAGES C CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTORCC ON)
+
+add_compile_definitions(BOOST_ENABLE_ASSERT_HANDLER QT_DEPRECATED_WARNINGS)
+if(WIN32)
+    add_compile_definitions(WIN32_LEAN_AND_MEAN NOMINMAX)
+endif()
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets Sql Concurrent)
+
+option(BUILD_TESTS "Build the gtest executables and register them with ctest" ON)
+
+add_subdirectory(core)
+add_subdirectory(pgsql)
+add_subdirectory(pglablib)
+add_subdirectory(pglab)
+
+if(BUILD_TESTS)
+    enable_testing()
+    add_subdirectory(tests)
+endif()