[Feature Request] Resolve type definition from the web

[BasixKOR]

Context

• This issue is not a bug report. (please use a different template for reporting a bug)
• This issue is not a duplicate of an existing issue. (please use the search to find existing issues)

Description

Hi!

Thank you for creating this incredible piece of editor to be used for web applications. It is a very useful and nice way to provide source code input to users.

However, I noticed when using TypeScript code the user gets a Cannot find module 'foo'. error every time they import something. AFAIK This is intended behaviour and to fix this the website should provide the type definitions via addExtraLib or something else.

But when the website can't reasonably predict what kind of library the user is going to use they cannot provide the type definition for Monaco editor to use and feeding every possible type definition is practically impossible.

So here's the idea: Let's fetch them from the web. Using unpkg or other CDN providers we can fetch type definition on-the-fly. We could inspect the package.json or the import path to what type definition should we use.