New Timeline (#4936)

Refactored the code to introduce two different concepts:
- AuditLogs (immutable, raw data)
- TimelineActivities (user-friendly, transformed data)

Still some work needed:
- Add message, files, calendar events to timeline (~2 hours if done
naively)
- Refactor repository to try to abstract concept when we can (tbd, wait
for Twenty ORM)
- Introduce ability to display child timelines on parent timeline with
filtering (~2 days)
- Improve UI: add links to open note/task, improve diff display, etc
(half a day)
- Decide the path forward for Task vs Notes: either introduce a new
field type "Record Type" and start going into that direction ; or split
in two objects?
- Trigger updates when a field is changed (will be solved by real-time /
websockets: 2 weeks)
- Integrate behavioral events (1 day for POC, 1 week for
clean/documented)

<img width="1248" alt="Screenshot 2024-04-12 at 09 24 49"
src="https://github.com/twentyhq/twenty/assets/6399865/9428db1a-ab2b-492c-8b0b-d4d9a36e81fa">

packages/twenty-server/src/engine/object-metadata-repository/metadata-to-repository.mapping.ts

@@ -5,7 +5,8 @@ import { CalendarEventRepository } from 'src/modules/calendar/repositories/calen
 import { CompanyRepository } from 'src/modules/company/repositories/company.repository';
 import { BlocklistRepository } from 'src/modules/connected-account/repositories/blocklist.repository';
 import { ConnectedAccountRepository } from 'src/modules/connected-account/repositories/connected-account.repository';
-import { EventRepository } from 'src/modules/event/repositiories/event.repository';
+import { AuditLogRepository } from 'src/modules/timeline/repositiories/audit-log.repository';
+import { TimelineActivityRepository } from 'src/modules/timeline/repositiories/timeline-activity.repository';
 import { MessageChannelMessageAssociationRepository } from 'src/modules/messaging/repositories/message-channel-message-association.repository';
 import { MessageChannelRepository } from 'src/modules/messaging/repositories/message-channel.repository';
 import { MessageParticipantRepository } from 'src/modules/messaging/repositories/message-participant.repository';
@@ -15,6 +16,7 @@ import { PersonRepository } from 'src/modules/person/repositories/person.reposit
 import { WorkspaceMemberRepository } from 'src/modules/workspace-member/repositories/workspace-member.repository';
 
 export const metadataToRepositoryMapping = {
+  AuditLogObjectMetadata: AuditLogRepository,
   BlocklistObjectMetadata: BlocklistRepository,
   CalendarChannelEventAssociationObjectMetadata:
     CalendarChannelEventAssociationRepository,
@@ -23,7 +25,6 @@ export const metadataToRepositoryMapping = {
   CalendarEventObjectMetadata: CalendarEventRepository,
   CompanyObjectMetadata: CompanyRepository,
   ConnectedAccountObjectMetadata: ConnectedAccountRepository,
-  EventObjectMetadata: EventRepository,
   MessageChannelMessageAssociationObjectMetadata:
     MessageChannelMessageAssociationRepository,
   MessageChannelObjectMetadata: MessageChannelRepository,
@@ -31,5 +32,6 @@ export const metadataToRepositoryMapping = {
   MessageParticipantObjectMetadata: MessageParticipantRepository,
   MessageThreadObjectMetadata: MessageThreadRepository,
   PersonObjectMetadata: PersonRepository,
+  TimelineActivityObjectMetadata: TimelineActivityRepository,
   WorkspaceMemberObjectMetadata: WorkspaceMemberRepository,
 };