New schema for Algorithm configuration data

[ericbuckley]

Summary

In models.py add new classes for storing data related to the available algorithms to run.

Acceptance Criteria

• [x] ORM classes to describe the below classes
• [x] Alembic migrations to create the new tables

Details / Tasks

erDiagram
    Algorithm {
        int id
        bool is_default "a check should be added to guarentee that only 1 row in the table is marked as the default"
        string label "should be unique"
        string description
    }

    AlgorithmPass {
        int id
        int algorithm_id
        int[] blockingkeys "a list of values from the BlockingKey table"
        string[] evaluators "a list of matching functions and values to use"
        string rule "the evaluation rule function"
        float cluster_ratio
        json kwargs "extra parameters to pass to the evalator functions"
    }

    Algorithm ||--o{ AlgorithmPass: "has"

Dependencies

8 is adding the Alembic dependency and laying the groundwork for database migrations