chore: improve the `repository` entry on `package.json` to follow the monorepo structure

[micalevisk]

For instance, if you change this:

https://github.com/deepkit/deepkit-framework/blob/9ca56a0f1c075f392118628e3b97ca2a958a4216/packages/type/package.json#L22

to this:

  "repository": {
    "url": "https://github.com/deepkit/deepkit-framework",
    "directory": "packages/type"
  },

then the repository link on NPM website will bring us to the ./packages/type dir

[marcj]

Oh awesome, will do it👍

[micalevisk]

closing this due to inactivity