Move all UI code into new 'ui' directory

src/ui/modals/AddEventModal.slint

@@ -0,0 +1,49 @@
+import { Palette } from "@selenite";
+import { VTextInput } from "@selenite";
+import { VButton, VText, VDatePicker } from "@selenite";
+import { AppActions } from "../Actions.slint"; 
+import { Modal } from "@selenite";
+import { VTimePicker } from "@selenite";
+import { ComboBox } from "std-widgets.slint";
+import { AppModels } from "../Models.slint";
+
+export component AddEventModal inherits Modal {
+	public function open() {
+		root.show();
+	}
+
+	VerticalLayout {
+		padding: 16px;
+		spacing: 8px;
+		sourceInput := ComboBox {
+			model: AppModels.available-sources-strings;
+		}
+		titleInput := VTextInput {
+			label: "title";
+		}
+		VText { text: "on"; vertical-alignment: bottom;}
+		dateInput := VDatePicker {
+			enabled: true;
+		}
+		HorizontalLayout {
+			spacing: 4px;
+			VText { text: "between"; vertical-alignment: bottom; }
+			startTimeInput := VTimePicker {  }
+			VText { text: "and"; vertical-alignment: bottom; }
+			endTimeInput := VTimePicker {  }
+		}
+		VButton {
+			text: "Create";
+			clicked => { 
+				AppActions.create-event({
+					source-id: AppModels.get-source-id-from-name(sourceInput.current-value),
+					title: titleInput.text,
+					date: dateInput.date, 
+					starts-at: startTimeInput.time,
+					ends-at: endTimeInput.time
+				});
+				root.close();
+			}
+		}
+	 }
+}