Add multiple middleware support

[imanpalsingh]

Description

Currently, you can only add one middleware which is sufficient but for complex use cases where you want to separate middlewares for reusability, ability to add more than one middleware is required.

Expected

1. Ability to define middleware by

export const configuration = {
  connectionUrl: 'postgresql://USER:PASSWORD@HOST:PORT/DATABASE',

  tables: {
    users: [checkIfInactive, checkIfAdmin, maskingRules], // two middlewares - checkIfInactive and checkIfAdmin
  },
};

The middleware logic is currently present in engine.ts