Have a mapping between parts of Tails and their programming languages

While having a look at http://whatcanidoformozilla.org/ on tails-project we end up agreeing that we are missing a mapping between the subprojects of Tails and their programming languages. In other word, an easy for new contributors to match their programming skills with tickets they can solve.

It should be maintanable but not necessarily depend on a fancy webapp like Mozilla does.

https://mailman.boum.org/pipermail/tails-project/2015-November/000368.html

Feature Branch: https://salsa.debian.org/tails-team/tails/merge_requests/37#note_108671

Related issues

Related to #10179 (closed)
Related to #14516

Original created by @sajolida on 10708 (Redmine)

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