* feat: use go1.16 embedding for resources
We want to embed everything that can be easily embedded. We should, at a
minimum, replace the downloading of resources and bindata.
Ref: https://github.com/ooni/probe/issues/1367.
* fix: get rid of bindata and use go embed instead
* fix: start unbreaking some automatic tests
* fix: fetch resources as part of the mobile build
* fix: convert more stuff to go1.16
I still expect many breakages, but we'll fix them.
* fix: make the windows CI green
* fix: get resources before running QA
* fix: go1.16 uses modules by default
* hopefully fix all other outstanding issues
* fix(QA/telegram.py): add another DC IP address
* Apply suggestions from code review
* feat: add end-to-end testing to this repository
Part of https://github.com/ooni/probe-engine/issues/1181
Motivation: we want to run this check from the repository where
we work the most, such that it's unlikely it pauses due to inactivity,
as it may happen for less frequently touched upon repositories.
Code adapted from https://github.com/ooni/e2etesting/
* fix: correct name for main branch
