feat: replace jest with vitest

src/helpers/time/calculateDayInterval.test.js

@@ -1,3 +1,5 @@
+import {test, expect} from 'vitest'
+
 import {calculateDayInterval} from './calculateDayInterval'
 
 const days = {

src/helpers/time/calculateNearestTime.test.js

@@ -1,3 +1,5 @@
+import {test, expect} from 'vitest'
+
 import {calculateNearestHours} from './calculateNearestHours'
 
 test('5:00', () => {

src/helpers/time/createDateFromString.test.js

@@ -1,3 +1,5 @@
+import {test, expect} from 'vitest'
+
 import {createDateFromString} from './createDateFromString'
 
 test('YYYY-MM-DD HH:MM', () => {