Publish project.created NATS event on project creation

[Copilot]

No NATS event was published when a project was created, preventing async processes from reacting to project creation.

Changes

• Event schema (internal/pubsub/schemas/events.go): Added EventProjectCreated constant, ProjectEvent struct, and ProjectEventsProcess(organizationID) subject function
• Stream bootstrap (internal/pubsub/consumer/bootstrap.go, consumer.go): Added projects stream and projects-events-process consumer
• Controller (internal/http/controllers/v1/management/projects.go): Added pubsub.Publisher to ProjectsController; publishes project.created before tx.Commit(). If the publish fails, the request fails and the transaction is rolled back, ensuring consistency between NATS and the database.
• Tests: Added TestCreateProjectPublishesNATSEvent using a recording publisher to verify event subject, name, and payload. Added TestCreateProjectRollbackOnPublishFailure to verify that a publish failure rolls back the transaction and returns an error.

Event payload

Published to subject projects.events.<organization_id>:

{
  "id": "<project_id>",
  "name": "project.created",
  "organization_id": "<org_id>",
  "data": {
    "name": "My Project",
    "timezone": "America/New_York",
    "locale": "en-US"
  }
}

Original prompt

Please check if an event is published to nats when a new project is created. I would like to be able to trigger other async processes on project creation.

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