Add NPM package, debs, rpms and refactor CI/build process

Closes many issues that I'll prune after adding more docs
for users.

ci/dev/ci.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+main() {
+  cd "$(dirname "$0")/../.."
+
+  yarn fmt
+  yarn lint
+  yarn test
+}
+
+main "$@"