Add Alembic to project for database migrations

migrations/versions/2022_04_15_1605-716726b4a1fe_initial_revision.py

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+"""
+Initial revision
+
+Revision ID: 716726b4a1fe
+Revises: 
+Create Date: 2022-04-15 16:05:29.358429+02:00
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+# Revision identifiers, used by Alembic.
+revision = '716726b4a1fe'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        'tasks',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('title', sa.String(length=255), nullable=False),
+        sa.Column('description', sa.Text(), nullable=False),
+        sa.PrimaryKeyConstraint('id', name=op.f('pk_tasks'))
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('tasks')
+    # ### end Alembic commands ###