feat: make types compatible with deno

[dchambers]

Guarantee type compatibility with even the built in npm support in Deno.

Relevant context here, though in the case of @mesh/core types are also not pulling through in all cases when using a CDN (via https://esm.sh/@meshsdk/[email protected]) either:

• https://docs.deno.com/runtime/manual/node/npm_specifiers#module-resolution