init: new structure + fix lint errors

cpv3/db/models.py

@@ -0,0 +1,21 @@
+from cpv3.db.base import Base
+from cpv3.modules.jobs.models import Job, JobEvent
+from cpv3.modules.media.models import ArtifactMediaFile, MediaFile
+from cpv3.modules.projects.models import Project
+from cpv3.modules.files.models import File
+from cpv3.modules.transcription.models import Transcription
+from cpv3.modules.users.models import User
+from cpv3.modules.webhooks.models import Webhook
+
+__all__ = [
+    "Base",
+    "User",
+    "Project",
+    "File",
+    "MediaFile",
+    "ArtifactMediaFile",
+    "Transcription",
+    "Job",
+    "JobEvent",
+    "Webhook",
+]