Legal API - alembic script and model update to exclude businesses from dissolution

[argush3]

A new no_dissolution column will be introduced to the businesses table as a way to flag a business to be excluded from the dissolution process.

TODOs

• [ ] Create alembic script for adding no_dissolution column to businesses table
• [ ] Add new column to code model
• [ ] Add new property to business response return when GET /business is called
• [ ] Update unit tests as appropriate