feat: IMAP Driver Integration (#12576)

### Added IMAP integration 

This PR adds support for connecting email accounts via IMAP protocol,
allowing users to sync their emails without OAuth.

#### DB Changes:
- Added customConnectionParams and connectionType fields to
ConnectedAccountWorkspaceEntity

#### UI:
- Added settings pages for creating and editing IMAP connections with
proper validation and connection testing.
- Implemented reconnection flows for handling permission issues.

#### Backend:
- Built ImapConnectionModule with corresponding resolver and service for
managing IMAP connections.
- Created MessagingIMAPDriverModule to handle IMAP client operations,
message fetching/parsing, and error handling.

#### Dependencies:
Integrated `imapflow` and `mailparser` libraries with their type
definitions to handle the IMAP protocol communication.

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-server/src/engine/core-modules/client-config/client-config.controller.spec.ts

@@ -96,6 +96,7 @@ describe('ClientConfigController', () => {
         isGoogleMessagingEnabled: false,
         isGoogleCalendarEnabled: false,
         isConfigVariablesInDbEnabled: false,
+        isIMAPMessagingEnabled: false,
         calendarBookingPageId: undefined,
       };
 

packages/twenty-server/src/engine/core-modules/client-config/client-config.entity.ts

@@ -177,6 +177,9 @@ export class ClientConfig {
   @Field(() => Boolean)
   isConfigVariablesInDbEnabled: boolean;
 
+  @Field(() => Boolean)
+  isIMAPMessagingEnabled: boolean;
+
   @Field(() => String, { nullable: true })
   calendarBookingPageId?: string;
 }

packages/twenty-server/src/engine/core-modules/client-config/services/client-config.service.ts

@@ -137,6 +137,9 @@ export class ClientConfigService {
       isConfigVariablesInDbEnabled: this.twentyConfigService.get(
         'IS_CONFIG_VARIABLES_IN_DB_ENABLED',
       ),
+      isIMAPMessagingEnabled: this.twentyConfigService.get(
+        'MESSAGING_PROVIDER_IMAP_ENABLED',
+      ),
       calendarBookingPageId: this.twentyConfigService.get(
         'CALENDAR_BOOKING_PAGE_ID',
       ),