migrate date range selection sheet / dialog to composition API and typescript

src/stores/environment.ts

@@ -0,0 +1,11 @@
+import { ref } from 'vue';
+import { defineStore } from 'pinia';
+
+export const useEnvironmentsStore = defineStore('environments', () => {
+    const framework7DarkMode = ref<boolean | undefined>(undefined);
+
+    return {
+        // states
+        framework7DarkMode
+    };
+});