feat: add event rows to Show Page Calendar tab (#4319)

* feat: add event rows to Show Page Calendar tab

Closes #4287

* refactor: use time as events group key instead of ISO string for easier sorting

* feat: implement data model changes

* refactor: improve sorting

packages/twenty-front/src/testing/mock-data/calendar.ts

@@ -0,0 +1,52 @@
+import { addDays, subMonths } from 'date-fns';
+
+import { CalendarEvent } from '@/activities/calendar/types/CalendarEvent';
+
+export const mockedCalendarEvents: CalendarEvent[] = [
+  {
+    id: '9a6b35f1-6078-415b-9540-f62671bb81d0',
+    endsAt: addDays(new Date().setHours(11, 30), 1),
+    isFullDay: false,
+    startsAt: addDays(new Date().setHours(10, 0), 1),
+    visibility: 'METADATA',
+  },
+  {
+    id: '19b32878-a950-4968-9e3b-ce5da514ea41',
+    endsAt: new Date(new Date().setHours(18, 40)),
+    isCanceled: true,
+    isFullDay: false,
+    startsAt: new Date(new Date().setHours(18, 0)),
+    title: 'Bug solving',
+    visibility: 'SHARE_EVERYTHING',
+  },
+  {
+    id: '6ad1cbcb-2ac4-409e-aff0-48165556fc0c',
+    endsAt: new Date(new Date().setHours(16, 30)),
+    isFullDay: false,
+    startsAt: new Date(new Date().setHours(15, 15)),
+    title: 'Onboarding Follow-Up Call',
+    visibility: 'SHARE_EVERYTHING',
+  },
+  {
+    id: '52cc83e3-f3dc-4c25-8a7d-5ff857612142',
+    endsAt: new Date(new Date().setHours(10, 30)),
+    isFullDay: false,
+    startsAt: new Date(new Date().setHours(10, 0)),
+    title: 'Onboarding Call',
+    visibility: 'SHARE_EVERYTHING',
+  },
+  {
+    id: '5a792d11-259a-4099-af51-59eb85e15d83',
+    isFullDay: true,
+    startsAt: subMonths(new Date().setHours(8, 0), 1),
+    visibility: 'METADATA',
+  },
+  {
+    id: '89e2a1c7-3d3f-4e79-a492-aa5de3785fc5',
+    endsAt: subMonths(new Date().setHours(14, 30), 3),
+    isFullDay: false,
+    startsAt: subMonths(new Date().setHours(14, 0), 3),
+    title: 'Alan x Garry',
+    visibility: 'SHARE_EVERYTHING',
+  },
+];