feat: manage external source lifecycle

apps/api/alembic/versions/0016_source_lifecycle.py

@@ -0,0 +1,24 @@
+"""track source record lifecycle checks
+
+Revision ID: 0016
+Revises: 0015
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "0016"
+down_revision = "0015"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("external_observation", sa.Column("source_check_status", sa.String(length=30)))
+    op.add_column("external_observation", sa.Column("source_checked_at", sa.DateTime(timezone=True)))
+
+
+def downgrade() -> None:
+    op.drop_column("external_observation", "source_checked_at")
+    op.drop_column("external_observation", "source_check_status")