Start implementing rich-text editor

src/libneochat/CMakeLists.txt

@@ -18,6 +18,8 @@ target_sources(LibNeoChat PRIVATE
     filetype.cpp
     linkpreviewer.cpp
     neochatdatetime.cpp
+    nestedlisthelper_p.h
+    nestedlisthelper.cpp
     roomlastmessageprovider.cpp
     spacehierarchycache.cpp
     texthandler.cpp
@@ -68,6 +70,7 @@ ecm_add_qml_module(LibNeoChat GENERATE_PLUGIN_SOURCE
         qml/SearchPage.qml
         qml/CreateRoomDialog.qml
         qml/CreateSpaceDialog.qml
+        qml/OpenFileDialog.qml
     DEPENDENCIES
         io.github.quotient_im.libquotient
 )
@@ -100,6 +103,7 @@ target_link_libraries(LibNeoChat PUBLIC
     Qt::Multimedia
     Qt::Quick
     Qt::QuickControls2
+    KF6::ColorScheme
     KF6::ConfigCore
     KF6::CoreAddons
     KF6::I18n