Add transform to TypeScript PopulateOptions interface

[vkarpov15]

Do you want to request a feature or report a bug?

What is the current behavior?

If the current behavior is a bug, please provide the steps to reproduce.

mongoose/index.d.ts

Lines 1020 to 1038 in 80245ed

	interface PopulateOptions {
	/** space delimited path(s) to populate */
	path: string;
	/** fields to select */
	select?: any;
	/** query conditions to match */
	match?: any;
	/** optional model to use for population */
	model?: string | Model<any>;
	/** optional query options like sort, limit, etc */
	options?: any;
	/** deep populate */
	populate?: PopulateOptions | Array<PopulateOptions>;
	/**
	* If true Mongoose will always set `path` to an array, if false Mongoose will
	* always set `path` to a document. Inferred from schema by default.
	*/
	justOne?: boolean;
	}

should have transform?: ...

What is the expected behavior?

Should be able to specify transform as a populate option

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that "latest" is not a version.

5.12.x