build,meta: tweak Travis config

* Add `lint-py-build` to get `lint-ci` to lint python
* Add compile V8 job
* Make compilation verbose
* Test with `test-ci`

PR-URL: https://github.com/nodejs/node/pull/26969


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>