Missing dependency: @graphql-tools/apollo-engine-loader

### Describe the bug

Package `@graphql-codegen/plugin-helpers` has a dependency on `@graphql-tools/apollo-engine-loader`.

File:
https://github.com/dotansimha/graphql-code-generator/blob/master/packages/utils/plugins-helpers/src/types.ts

Line 4:

import type { ApolloEngineOptions } from '@graphql-tools/apollo-engine-loader';

It is declared in package.json as a devDependency. But it does not get installed when I check out and install my plugin project (https://github.com/klaudhaus/graphqlex-codegen). So I have to install it directly as a dependency in my project before I can run `tsc`, even though I have no direct dependency on it.

Tested with both `npm` and `pnpm` clients.

Dev dependency would seem reasonable for something only used as a type import, but at least in this case it breaks the plugin project's compilation, as well as any downstream project that uses it. I've come across similar in some of my own projects and had to declare as both `devDependency` and `peerDependency`. Although in this case, as multiple versions of this lib won't cause issues (it's not loaded at runtime) moving it to dependencies could be a pragmatic option.

### Your Example Website or App

https://github.com/klaudhaus/graphqlex-codegen

### Steps to Reproduce the Bug or Issue

git clone https://github.com/klaudhaus/graphqlex-codegen

then either:

npm install

or

pnpm install

### Expected behavior

Install package, reference in my project and compile.

### Screenshots or Videos

_No response_

### Platform

- OS: macOS
- NodeJS: 18.12.0
- `graphql` version: Not in this project
- `@graphql-codegen/*` version(s):
plugin-helpers: 2.7.1
visitor-plugin-common: 2.13.0

### Codegen Config File

_No response_

### Additional context

_No response_