COMUNICA: extract basic typings into separate package

[jacoscaz]

We're currently duplicating Comunica's internal typings in order to

1. decouple quadstore-comunica from quadstore and support other configurations of Comunica
2. distribute quadstore-comunica in bundled form

See:

• https://github.com/beautifulinteractions/node-quadstore/blob/6c9b6238a5c03bf9e52f90a6c9901aa2f7eaf204/lib/types/comunica.ts
• https://github.com/beautifulinteractions/node-quadstore-comunica/blob/50d6b4f77c833e79d121ef32b5b1d7b3ad5e8d2f/index.d.ts

We agreed with @rubensworks to extract Comunica's basic typings into a separate package within Comunica's monorepo, so that they can be published on their own.

[jacoscaz]

The PR to Comunica has been merged (comunica/comunica#784). We'll refer to the new @comunica/types package once it will have been published to NPM.

[jacoscaz]

Released in quadstore@9.0.0!