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

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

ci/steps/test.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+main() {
+  cd "$(dirname "$0")/../.."
+
+  yarn
+
+  git submodule update --init
+  # We do not `yarn vscode` to make test.sh faster.
+  # If the patch fails to apply, then it's likely already applied
+  yarn vscode:patch &> /dev/null || true
+
+  yarn ci
+}
+
+main "$@"