feat: add Kirigami app skeleton with libmpv playback

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/CMakeLists.txt

@@ -0,0 +1,32 @@
+add_executable(qtpotato
+    main.cpp
+    mpv/mpvitem.cpp
+    mpv/mpvitem.h
+)
+
+ecm_add_qml_module(qtpotato
+    URI dev.trivk.qtpotato
+)
+
+ecm_target_qml_sources(qtpotato SOURCES
+    qml/Main.qml
+    qml/PlayerPage.qml
+)
+
+target_include_directories(qtpotato PRIVATE mpv)
+target_compile_definitions(qtpotato PRIVATE QTPOTATO_VERSION_STRING="${PROJECT_VERSION}")
+
+target_link_libraries(qtpotato PRIVATE
+    Qt6::Gui
+    Qt6::Qml
+    Qt6::Quick
+    Qt6::QuickControls2
+    Qt6::Widgets
+    KF6::I18n
+    KF6::I18nQml
+    KF6::CoreAddons
+    KF6::Crash
+    MpvQt::MpvQt
+)
+
+install(TARGETS qtpotato ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})