o365 calendar sync (#8044)

Implemented:

* Account Connect
* Calendar sync via delta ids then requesting single events


I think I would split the messaging part into a second pr - that's a
step more complex then the calendar :)

---------

Co-authored-by: bosiraphael <raphael.bosi@gmail.com>

packages/twenty-server/src/modules/connected-account/oauth2-client-manager/drivers/microsoft/microsoft-oauth2-client-manager.service.ts

@@ -0,0 +1,62 @@
+import { Injectable } from '@nestjs/common';
+
+import {
+  AuthProvider,
+  AuthProviderCallback,
+  Client,
+} from '@microsoft/microsoft-graph-client';
+
+import { EnvironmentService } from 'src/engine/core-modules/environment/environment.service';
+
+@Injectable()
+export class MicrosoftOAuth2ClientManagerService {
+  constructor(private readonly environmentService: EnvironmentService) {}
+
+  public async getOAuth2Client(refreshToken: string): Promise<Client> {
+    const authProvider: AuthProvider = async (
+      callback: AuthProviderCallback,
+    ) => {
+      try {
+        const tenantId = this.environmentService.get(
+          'AUTH_MICROSOFT_TENANT_ID',
+        );
+
+        const urlData = new URLSearchParams();
+
+        urlData.append(
+          'client_id',
+          this.environmentService.get('AUTH_MICROSOFT_CLIENT_ID'),
+        );
+        urlData.append('scope', 'https://graph.microsoft.com/.default');
+        urlData.append('refresh_token', refreshToken);
+        urlData.append(
+          'client_secret',
+          this.environmentService.get('AUTH_MICROSOFT_CLIENT_SECRET'),
+        );
+        urlData.append('grant_type', 'refresh_token');
+
+        const res = await fetch(
+          `https://login.microsoftonline.com/${tenantId}/oauth2/v2.0/token`,
+          {
+            method: 'POST',
+            body: urlData,
+          },
+        );
+
+        const data = await res.json();
+
+        callback(null, data.access_token);
+      } catch (error) {
+        callback(error, null);
+      }
+    };
+
+    const client = Client.init({
+      defaultVersion: 'v1.0',
+      debugLogging: false,
+      authProvider: authProvider,
+    });
+
+    return client;
+  }
+}

packages/twenty-server/src/modules/connected-account/oauth2-client-manager/oauth2-client-manager.module.ts

@@ -1,11 +1,16 @@
 import { Module } from '@nestjs/common';
 
 import { GoogleOAuth2ClientManagerService } from 'src/modules/connected-account/oauth2-client-manager/drivers/google/google-oauth2-client-manager.service';
+import { MicrosoftOAuth2ClientManagerService } from 'src/modules/connected-account/oauth2-client-manager/drivers/microsoft/microsoft-oauth2-client-manager.service';
 import { OAuth2ClientManagerService } from 'src/modules/connected-account/oauth2-client-manager/services/oauth2-client-manager.service';
 
 @Module({
   imports: [],
-  providers: [OAuth2ClientManagerService, GoogleOAuth2ClientManagerService],
-  exports: [OAuth2ClientManagerService],
+  providers: [
+    OAuth2ClientManagerService,
+    GoogleOAuth2ClientManagerService,
+    MicrosoftOAuth2ClientManagerService,
+  ],
+  exports: [OAuth2ClientManagerService, MicrosoftOAuth2ClientManagerService],
 })
 export class OAuth2ClientManagerModule {}

packages/twenty-server/src/modules/connected-account/standard-objects/connected-account.workspace-entity.ts

@@ -22,6 +22,7 @@ import { WorkspaceMemberWorkspaceEntity } from 'src/modules/workspace-member/sta
 
 export enum ConnectedAccountProvider {
   GOOGLE = 'google',
+  MICROSOFT = 'microsoft',
 }
 
 @WorkspaceEntity({