feat: add task and habit reordering

migrations/versions/0012_habit_position.py

@@ -0,0 +1,23 @@
+"""add habit position
+
+Revision ID: 0012_habit_position
+Revises: 0011_lunar_countdowns
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0012_habit_position"
+down_revision = "0011_lunar_countdowns"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("habits") as batch_op:
+        batch_op.add_column(sa.Column("position", sa.Integer(), nullable=False, server_default="0"))
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("habits") as batch_op:
+        batch_op.drop_column("position")