Add new cleanup task

Add a new cleanup task that will remove all past runs of task_clean_up_tasks and task_clean_old_task, which are not interesting yet take up 99.999% of the task history page.

gso/migrations/versions/2024-08-13_844aa61c09ce_add_new_cleanup_task.py

+"""Add new cleanup task.
+
+Revision ID: 844aa61c09ce
+Revises: 88dd5a44150d
+Create Date: 2024-08-13 12:23:11.043293
+
+"""
+
+from uuid import uuid4
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '844aa61c09ce'
+down_revision = '88dd5a44150d'
+branch_labels = None
+depends_on = None
+
+workflows = [
+    {
+        "name": "task_clean_old_tasks",
+        "target": "SYSTEM",
+        "description": "Remove old cleanup tasks",
+        "workflow_id": uuid4(),
+    }
+]
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    for workflow in workflows:
+        conn.execute(
+            sa.text(
+                "INSERT INTO workflows VALUES (:workflow_id, :name, :target, :description, now())"
+            ),
+            workflow,
+        )
+
+
+def downgrade() -> None:
+    conn = op.get_bind()
+    for workflow in workflows:
+        conn.execute(sa.text("DELETE FROM workflows WHERE name = :name"), {"name": workflow["name"]})