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/.env.example

@@ -14,6 +14,7 @@ FRONTEND_URL=http://localhost:3001
 # REFRESH_TOKEN_EXPIRES_IN=90d
 # FILE_TOKEN_EXPIRES_IN=1d
 # MESSAGING_PROVIDER_GMAIL_ENABLED=false
+# MESSAGING_PROVIDER_IMAP_ENABLED=false
 # CALENDAR_PROVIDER_GOOGLE_ENABLED=false
 # MESSAGING_PROVIDER_MICROSOFT_ENABLED=false
 # CALENDAR_PROVIDER_MICROSOFT_ENABLED=false