Add CMakeLists & gitignore

.gitignore

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+# Default CMake buildroot
+build/
+# VSCode files
+.vscode/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.13)
+project(WinNWT5 C CXX)
+
+
+#set(CMAKE_AUTOMOC ON)
+# Find Qt5 libs
+find_package(Qt5 COMPONENTS Widgets LinguistTools PrintSupport SerialPort REQUIRED)
+# List of sources
+set(NWT_SOURCES
+    main.cpp
+    mainwindow.cpp 
+    nwt7mainclass.cpp 
+    sweepcurvewidget.cpp 
+    optiondlg.cpp 
+    profildlg.cpp
+    fmarkedlg.cpp 
+    configfile.cpp 
+    markersdlg.cpp 
+    probedlg.cpp 
+    firmwaredlg.cpp 
+    Attenuator.cpp
+)
+# List of headers (needed for MOC)
+set(NWT_HEADERS
+    constdef.h
+    mainwindow.h
+    nwt7mainclass.h
+    sweepcurvewidget.h
+    optiondlg.h
+    profildlg.h
+    fmarkedlg.h
+    configfile.h
+    markersdlg.h
+    probedlg.h
+    firmwaredlg.h
+    BugReport.h
+    Attenuator.h
+    build.h
+    modem.hpp
+)
+# Modem implementation
+if(WIN32)
+    list(APPEND NWT_SOURCES modem_win.cpp)
+elseif(UNIX)
+    list(APPEND NWT_SOURCES modem_lin.cpp)
+else()
+    message(FATAL_ERROR "OS ${CMAKE_SYSTEM_NAME} not supported")
+endif()
+# Resources
+qt5_add_resources(NWT_SOURCES icon.qrc)
+# Translations
+set(TS_FILES
+    app_cn.ts 
+    app_de.ts 
+    app_ea.ts 
+    app_es.ts 
+    app_hu.ts 
+    app_nl.ts 
+    app_pl.ts 
+    app_ru.ts
+)
+set_source_files_properties(${TS_FILES} PROPERTIES OUTPUT_LOCATION "l10n")
+qt5_add_translation(qmFiles ${TS_FILES})
+# A final executable
+QT5_WRAP_CPP(MOC_FILES ${NWT_HEADERS})
+add_executable(winnwt5 ${NWT_SOURCES} ${MOC_FILES})
+target_link_libraries(winnwt5 PRIVATE Qt5::Core Qt5::Widgets Qt5::PrintSupport Qt5::SerialPort)