Transform to CMake project.

CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.0)
+
+project(K7)
+
+find_package(Wt COMPONENTS Wt HTTP CONFIG REQUIRED)
+find_package(Gpgmepp CONFIG REQUIRED)
+
+add_executable(k7 
+    AppConfig.cpp     KeyringIO.cpp                   PopupCreate.cpp           SensitiveTreeTableNodeText.cpp
+    GpgMECWorker.cpp  LoopbackPassphraseProvider.cpp  PopupDeleter.cpp          Tools.cpp
+    GpgMEWorker.cpp   main.cpp                        PopupExpiryTime.cpp       TransientMessageWidget.cpp
+    K7Main.cpp        PopupAddUid.cpp                 PopupExportSecretKey.cpp
+    KeyEdit.cpp       PopupCertifyUserId.cpp          PopupUploader.cpp)
+
+target_link_libraries(k7 Wt::Wt Wt::HTTP Gpgmepp)
+
+install(TARGETS k7 RUNTIME DESTINATION bin)
+
+