Issue Description

Type "options.instanceName" is missing from SqlServerConnectionOptions and it is throwing a typescript error as the property is not declared within the definition file.

Expected Behavior

I should be able to add an instanceName property to the options object without a typescript error.

Actual Behavior

Error:
The expected type comes from property 'options' which is declared here on SqlServerConnectionOptions

Steps to Reproduce

Create an ormconfig.ts file with a SqlServerConnectionOptions type

import { SqlServerConnectionOptions } from 'typeorm/driver/sqlserver/SqlServerConnectionOptions'

const config: SqlServerConnectionOptions = {
  options: {
    ...,
    instanceName: 'test'
  }
}

My Environment

Windows 10
Node.js version | 14.16.0
Typescript version | 4.3.2
TypeORM version | 0.2.32

Relevant Database Driver(s)

• aurora-data-api
• aurora-data-api-pg
• better-sqlite3
• cockroachdb
• cordova
• expo
• mongodb
• mysql
• nativescript
• oracle
• postgres
• react-native
• sap
• sqlite
• sqlite-abstract
• sqljs
• sqlserver

Are you willing to resolve this issue by submitting a Pull Request?

• Yes, I have the time, and I know how to start.
• Yes, I have the time, but I don't know how to start. I would need guidance.
• No, I don't have the time, although I believe I could do it if I had the time...
• No, I don't have the time and I wouldn't even know how to start.