Suggestion: don't strip comments in tsconfig

[afholderman]

Hello, first of all thanks for creating this project. I've been working with it recently and noticed that types in the distributed packages have comments removed. Some of the comments, especially reference links, can be useful to package consumers. I'd like to make a suggestion to leave comments in and additionally to use JSDOC comments (/** comment here */) in the types. JSDOC comments are picked up and shown in intellisense tooltips in VS Code and likely other editors, so it would pass the info down at time of usage.