fix(packaging): limit global types to "node"

The @types/vinyl-fs package (pulled in by @types/gulp for the build
process) includes a re-typing of the NodeJS.WritableStream interface in
the global namespace, which is causing the package build process to
include a triple-slash directive referencing the vinyl-fs types in
@nestjs/core/router/sse-stream.d.ts. As @types/vinyl-fs is not included
in the depenedencies of @nestjs/core (nor should it be, as it is only a
build-time depenedency) this can cause the typescript compilation in a
consuming package to fail in some conditions.

A grep of a clean build of all the @nestjs packages shows that this is
the only non-node @types package referenced in a triple-slash directive,
so we should be able to safely limit the global types used in all
packages to just "node", as changed here.

(Arguably this could mean that @types/node should be included as a
peerDependency of @nestjs/core, but I think it's safer to assume that
anyone using nest will have that installed.)

Fixes nestjs#7247

Author: jonseitz

packages/tsconfig.base.json

@@ -15,7 +15,8 @@
     "sourceMap": false,
     "allowJs": false,
     "strict": true,
-    "strictNullChecks": false
+    "strictNullChecks": false,
+    "types": ["node"]
   },
   "exclude": ["../node_modules", "./**/*.spec.ts"]
 }