Add a migration table to keep track of the migrations

[kalroy]

User Story

As an Automate User, I should be able to store the migration status for a chef server.
The table should be able to store the status of different activities namely:

• Organisations Migration
• Users Migration

Acceptance Criteria

• The default value of the status should be In Progress

Implementation Details

Definition of Done

• All things specified in User Story Acceptance Criteria should be fulfilled.
• All Exceptions are Handled Properly
• Ensure logs have no unnecessary data.
• Test coverage for the new feature is done to at least 70%
• If needed raise Docs PR and tag documentation.
• Swagger Documentation updated
• Smoke Test done.
• Ensure Build and Integration Pipelines are Green.
• PR has 2 approvers.
• All Code Review Comments are Resolved.
• README doc should be updated, if needed.

[vinay033]

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