Adds VSCode docker debug task AR-1328

[dtasev]

Summary of work

This provides some useful Debug launch and pre-launch tasks. They start up the Docker container (and do their best to kill it at the end, but that doesn't always work 😄).

The idea is that if you want to Debug the queue processor but don't want to install the Python environment - just run the Docker one, it will pull & run the container, then connect with the queue processor.

You still need ActiveMQ running - so a task Run ActiveMQ Docker is added. This needs to be run manually, as it can remain in the background indefinitely. It adds a delay to the startup, and the docker queue processor already takes a few seconds longer than without docker.

How to test your work

Instructions have been added in https://github.com/ISISScientificComputing/autoreduce/wiki/Just-Use-VSCode-&-Docker

Before merging ensure the release notes have been updated

[codecov]

Codecov Report

Merging #1315 (0d66d27) into master (ab0146d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1315   +/-   ##
=======================================
  Coverage   53.52%   53.52%           
=======================================
  Files         108      108           
  Lines        4338     4338           
  Branches      549      549           
=======================================
  Hits         2322     2322           
  Misses       1967     1967           
  Partials       49       49           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ab0146d...0d66d27. Read the comment docs.