Refactor installation to use npm links and updated module's install scripts

[nkuba]

The installation scripts can work with npm links instead of providing addresses of dependent external contracts in files like external.js.

Artifacts directory is created in installation script so we don't need to create it in the scripts in local-setup.

This code depends on couple of other PRs in the modules:

• https://github.com/keep-network/keep-core/pull/2452
• https://github.com/keep-network/keep-ecdsa/pull/776
• https://github.com/keep-network/tbtc/pull/790