In theory, all of these are installable Python projects. However, you can't just, e.g., jump into `Tools/Scripts/libraries/webkitflaskpy` and run `pip install .`, because it will fail unable to find `webkitcorepy`. Per discussion with Jonathan, let's actually get these all installable as a first step towards migrating testing everything via tox (with its implicit virtualenv).
Pull request: https://github.com/WebKit/WebKit/pull/17306
<rdar://problem/115134687>