Support JSON column type in Json Duality

[phulakun]

Problem / use case

Json Duality Views currently do not allow projecting MySQL Column of Type 'JSON'.
This feature should support JSON Column type projection in JSON duality views.

Proposed behavior

The feature would specify behavior of Json Duality View with 'JSON' column.

• Enable DDL to accept JSON column type.
• Make ETAG calculation considering JSON column.
• Define and implement behavior of DML operations taking JSON column value as input.