Refactor the whole structure, no more separation for C++ and Slint files

src/windows/AppWindow/Actions.slint

@@ -0,0 +1,61 @@
+import { Date, Time } from "std-widgets.slint";
+import { CalendarDay } from "../../components/Calendar.slint";
+
+export struct NewTaskData {
+	sourceId: int,
+	eventId: int,
+	title: string,
+	scheduled: bool,
+	date: Date
+}
+
+export struct SaveTaskData {
+	sourceId: int,
+	id: int,
+	title: string,
+	scheduled: bool,
+	date: Date,
+}
+
+export struct NewEventParams {
+	sourceId: int,
+	title: string,
+	date: Date,
+	startsAt: Time,
+	endsAt: Time
+}
+
+export struct SaveEventParams {
+	sourceId: int,
+	id: int,
+	title: string,
+	date: Date,
+	startsAt: Time,
+	endsAt: Time
+}
+
+struct OpenNewTaskFormParams {
+	eventSourceId: int,
+	eventId: int,
+}
+
+export global AppWindowActions  {
+	callback task-clicked(int, int);
+	callback source-clicked(int);
+	callback open-settings-window();
+	callback open-add-source-window();
+	callback open-edit-source-window(int);
+	
+	callback open-new-task-form(OpenNewTaskFormParams);
+	callback open-edit-task-form(int, int);
+	callback open-new-event-form();
+	callback open-edit-event-form(int, int);
+	callback toggle-show-completed-tasks();
+	callback delete-task-clicked(int, int);
+	callback delete-event-clicked(int, int);
+
+	callback create-task(NewTaskData);
+	callback save-task(SaveTaskData);
+	callback create-event(NewEventParams);
+	callback save-event(SaveEventParams);
+}