Don't automatically include all types from dependencies

This produces an error if you try to use something from a global scope accidentally. It's only needed for "ambient" definitions; if the thing is included directly (like for all of the Node libraries like fs) then its types come along with it automatically.

Also:

Replace /// <reference /> usage because it does the same thing (see https://github.com/microsoft/TypeScript/issues/33901).
Remove unused @types/node dependency (TypeScript has that built in).
Add npm run lint

Issue: #3702

Requirements for PR author:

[n/a] All missing test coverage is tracked with "TODO" or .unimplemented().
[n/a] New helpers are /** documented */ and new helper files are found in helper_index.txt.
[n/a] Test behaves as expected in a WebGPU implementation. (If not passing, explain above.)
[n/a] Test have be tested with compatibility mode validation enabled and behave as expected. (If not passing, explain above.)

Requirements for reviewer sign-off:

[n/a] Tests are properly located in the test tree.
[n/a] Test descriptions allow a reader to "read only the test plans and evaluate coverage completeness", and accurately reflect the test code.
[n/a] Tests provide complete coverage (including validation control cases). Missing coverage MUST be covered by TODOs.
[ ] Helpers and types promote readability and maintainability.

When landing this PR, be sure to make any necessary issue status updates.

gpuweb / cts

Don't automatically include all types from dependencies #3704