add month year group for graph data

resources/js/types.ts

@@ -1,6 +1,16 @@
 export interface rainfall {
     id?: number,
     date: string,
+    start?: string,
+    days?: number,
+    label?: string,
+    value: number,
+}
+
+export interface rainfallGraphData {
+    start: string,
+    days: number,
+    label: string,
     value: number,
 }