cmake: Explicitly link in neochatplugin and use qt_* cmake commands

The QML code of the various QML modules is compiled to C++ by
qmlcachegen and then compiled into the final binary. Unfortunately, in
the current setup, the plugin for the org.kde.neochat QML module is not
linked into the app because qmlimportscanner can't find usages of it. No
generated C++ code for that module is then run and the QML is
interpreted from its bytecode instead.

This is likely due to the project not following recommended QML
structure and because it is not using qt_* variants of certain cmake
commands. It should not be necessary to link against the plugins
manually.

As a quick fix, link against the plugin explicitly and use qt_*
variants of cmake commands to help qmlimportscanner and to pick up the
existing C++ code.

src/app/CMakeLists.txt

@@ -3,7 +3,7 @@
 # SPDX-FileCopyrightText: 2020-2021 Tobias Fella <tobias.fella@kde.org>
 # SPDX-License-Identifier: BSD-2-Clause
 
-add_library(neochat STATIC
+qt_add_library(neochat STATIC
     controller.cpp
     controller.h
     roommanager.cpp
@@ -140,10 +140,17 @@ if(WIN32)
     set_target_properties(neochat PROPERTIES OUTPUT_NAME "neochatlib")
 endif()
 
-add_executable(neochat-app
+qt_add_executable(neochat-app
     main.cpp
 )
 
+if(ANDROID)
+    set_target_properties(neochat-app PROPERTIES
+        OUTPUT_NAME "neochat-app"
+        PREFIX "lib"
+    )
+endif()
+
 if(TARGET Qt::WebView)
     target_link_libraries(neochat-app PUBLIC Qt::WebView)
     target_compile_definitions(neochat-app PUBLIC -DHAVE_WEBVIEW)
@@ -183,7 +190,7 @@ else()
 endif()
 
 target_include_directories(neochat PRIVATE ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/models)
-target_link_libraries(neochat PRIVATE Loginplugin Roomsplugin RoomInfoplugin MessageContentplugin Timelineplugin Spacesplugin Chatbarplugin Settingsplugin Devtoolsplugin)
+target_link_libraries(neochat PRIVATE neochatplugin Loginplugin Roomsplugin RoomInfoplugin MessageContentplugin Timelineplugin Spacesplugin Chatbarplugin Settingsplugin Devtoolsplugin)
 target_link_libraries(neochat PUBLIC
     LibNeoChat
     Timeline