Added [Unmaintaned] / [Archived]

[mystery-z]

I noticed that a lot of the languages in the list aren't being worked on / are archived, so I've added [Unmaintaned] or [Archived] before certain languages.

Unmaintained = hasn't been updated / contributed to for 5 or more years Archived = owner has archived the repository

This PR is in accordance to #33

[hengestone]

For me half the fun of this list is to look at somewhat off the beaten path projects. Having the unmainatained/archived moniker diminishes its fun and explorative character. But it is useful to have those distinctions noted. How about marking with e.g. (*) and (-) instead of the words? With a note at the top or bottom of the list?

[mystery-z]

Fixed it~ Though I used (^) instead of (-) and I had to include the brackets because * is a markdown syntax.

[hengestone]

Thanks!