Part of https://github.com/ooni/probe/issues/1440. Basically, let us continue to update our build infrastructure so that we can release v3.10.0-beta. Now, it's the turn of iOS.
This PR introduces the `./make` script. For now, this script knows how to make Android releases. We have code in https://github.com/ooni/probe-cli/pull/311 that builds other artifacts in this repository. Because our current concern is https://github.com/ooni/probe/issues/1444, in this PR, I have chosen to keep the Android code necessary to fix https://github.com/ooni/probe/issues/1444. Additionally, this PR removes the script to publish to Bintray. This change part of the https://github.com/ooni/probe/issues/1440 cleanup effort.
