be able to set readConcern on mongoose.Schema

[sibelius]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the feature has not already been requested

🚀 Feature Proposal

Be able to define a readConcern similar to writeConcern at a mongoose.Schema level

Motivation

Simplify the use of readConcern per schema

Example

const Schema = new mongoose.Schema(
  {    
  },
  {
    timestamps: true,
    collection: 'LedgerEntry',
    writeConcern,
    readConcern,
  },
);