migrate overview store to composition API and typescript

src/core/base.ts

@@ -1,3 +1,8 @@
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export type PartialRecord<K extends keyof any, T> = {
+    [P in K]?: T;
+}
+
 export interface TypeAndName {
     readonly type: number;
     readonly name: string;

src/core/datetime.ts

@@ -25,6 +25,11 @@ export interface StartEndTime {
     readonly endTime: number;
 }
 
+export interface WritableStartEndTime extends StartEndTime {
+    startTime: number;
+    endTime: number;
+}
+
 export interface UnixTimeRange {
     readonly minUnixTime: number;
     readonly maxUnixTime: number;