renamed phunt-cli dist artifact from bundle.js to phunt-cli.js
excluded node_modules from being bundled by rollup in the generated bundle
updated release workflow which will purge dev dependencies from node_modules after build and copy them to phunt-cli dist directory to be packaged with the bundled artifact
updated CI workflow to not upload the build artifacts as they consume both CI time and disk space and I don't see much benefit to have them at this stage
Implementing proposed changes specified in #6.
Changes:
Closes #6.