chore: create build artifacts for each commit (#2082)

* chore: create build artifacts for each commit

* Switch to new npm package

* Update version to latest

* Publish the builds after all modes succeeded.

* Address comments

* Change snake_case to camelCase

scripts/ci/after-success.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Script which always runs when the current Travis mode succeeds.
+# Used to run the travis-after-modes script, which checks if all other modes finished.
+
+# Go to the project root directory
+cd $(dirname $0)/../..
+
+npmBin=$(npm bin)
+ciResult=$($npmBin/travis-after-modes)
+
+if [ "$ciResult" = "PASSED" ] && [ -z "$TRAVIS_PULL_REQUEST" ]; then
+  echo "All travis modes passed. Publishing the build artifacts..."
+  ./scripts/release/publish-build-artifacts.sh
+fi