Use Makefile for dependencies

[bonbud-macryg]

Mostly duplicates what's in gwbtc/groundwire#61. Includes an optional DEST= argument to automatically copy /dist/* into the target folder, such as the desk on a development ship.

[github-actions]

Groundwire Verification Failed

This PR will not be reviewed because commits are not signed by a recognized Groundwire ID.

UNREACHABLE 7e925600

Why?

This repository requires contributors to prove ownership of an onchain Groundwire identity.
Commit signatures are cryptographically verified against the signer's on-chain networking key.

How to fix this

1. Get a Groundwire ID — groundwire.network/get-started
2. Install commit signing — ./hooks/install.sh <your-ship-url>
3. Re-sign your commits — git rebase --exec "true" HEAD~N (after configuring signing)

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This repository is protected by Groundwire for GitHub.