adds target-exchange and initial migrations

migrations/versions/14ceaaaa6e85_initial_create.py

@@ -0,0 +1,33 @@
+"""initial create
+
+Revision ID: 14ceaaaa6e85
+Revises: 
+Create Date: 2021-09-19 23:52:49.797793
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '14ceaaaa6e85'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('target-exchange',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=255), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('target-exchange')
+    # ### end Alembic commands ###