Ability to set JSON Schema on Collection/Global Level

[ainsleyclark]

Typescript Schema on Collection/Global Level

I've noticed there's been a PR made that allows us to change the JSON schema on a field level. It would be fantastic if this key was also added to Collection and Global types so we are able to override specific types.

#6984

At the moment I have had to override fieldsToJSONSchema and it's quite hard keeping up with changes.

import type { CollectionConfig } from "payload";

export const Posts: CollectionConfig = {
	slug: "posts",
	admin: {
		useAsTitle: "name",
		defaultColumns: ["name", "url"],
	},
	typescriptSchema: [
		() => ({
			type: 'object',
			$ref: `#/definitions/objectWithNumber`,
		}),
	],
	fields: [
		{
			name: "name",
			label: "Name",
			type: "text",
			required: true,
		},
		{
			name: "title",
			label: "Title",
			type: "text",
			required: true,
		},
	]
};

Add Properties

It would also be extremely helpful to distinguish what Payload type a definition is.
For example, if a Definition is a Block type, it would make type generation so much easier if it was explicit in the schema.

"thumbnail": {
	"$ref": "#/definitions/media",
	"additionalProperties": {
		"payloadType": "media"
	},
	"type": [
		"object",
		"null"
	]
},

cc @r1tsuu