Feat/email composer improvements (#23188)

- Move composer to dedicated page
- Add test email option
- Auto saved as draft can be revisited from `objects/messageCampaigns`
later
- Campaign stats component



https://github.com/user-attachments/assets/9e523116-e79b-496d-9c9d-3887e0c9213f



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---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-server/src/database/commands/upgrade-version-command/instance-commands.constant.ts

@@ -119,6 +119,7 @@ import { WidenViewCalendarIntegrityConstraintFastInstanceCommand } from './2-23/
 import { AddApplicationIdToKeyValuePairFastInstanceCommand } from './2-23/2-23-instance-command-fast-1784659343818-add-application-id-to-key-value-pair';
 import { AddLogoFileIdToApplicationRegistration2_23FastInstanceCommand } from './2-23/2-23-instance-command-fast-1784823473532-add-logo-file-id-to-application-registration';
 import { AddMessageChannelDisplayNameFastInstanceCommand } from './2-25/2-25-instance-command-fast-1784904030252-add-message-channel-display-name';
+import { AddMessageCampaignWidgetTypeFastInstanceCommand } from './2-25/2-25-instance-command-fast-1785229950000-add-message-campaign-widget-type';
 import { BackfillCreatedWorkspaceActivationStatusSlowInstanceCommand } from './2-23/2-23-instance-command-slow-1784286705000-backfill-created-workspace-activation-status';
 import { UnlistUnclaimedNpmApplicationRegistrationsSlowInstanceCommand } from './2-23/2-23-instance-command-slow-1784322591746-unlist-unclaimed-npm-application-registrations';
 import { AddStatusesToBillingSubscriptionIndexSlowInstanceCommand } from './2-23/2-23-instance-command-slow-1784650048045-add-statuses-to-billing-subscription-index';
@@ -251,6 +252,7 @@ export const INSTANCE_COMMANDS = [
   AddSdkClientCoreChecksumToApplicationFastInstanceCommand,
   AddLogoFileIdToApplicationRegistration2_23FastInstanceCommand,
   AddMessageChannelDisplayNameFastInstanceCommand,
+  AddMessageCampaignWidgetTypeFastInstanceCommand,
   AddStatusesToBillingSubscriptionIndexSlowInstanceCommand,
   AddOnConnectLogicFunctionToConnectionProviderFastInstanceCommand,
   RepairKeyValuePairApplicationIdFastInstanceCommand,