feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/dayjs/plugin/isoWeek.d.ts

@@ -0,0 +1,27 @@
+import { PluginFunc, OpUnitType, ConfigType } from 'dayjs'
+
+declare const plugin: PluginFunc
+export = plugin
+
+type ISOUnitType = OpUnitType | 'isoWeek';
+
+declare module 'dayjs' {
+  interface Dayjs {
+    isoWeekYear(): number
+    isoWeek(): number
+    isoWeek(value: number): Dayjs
+
+    isoWeekday(): number
+    isoWeekday(value: number): Dayjs
+
+    startOf(unit: ISOUnitType): Dayjs
+
+    endOf(unit: ISOUnitType): Dayjs
+
+    isSame(date?: ConfigType, unit?: ISOUnitType): boolean
+
+    isBefore(date?: ConfigType, unit?: ISOUnitType): boolean
+
+    isAfter(date?: ConfigType, unit?: ISOUnitType): boolean
+  }
+}