Include useful github actions

[AndersonTorres]

bqn-mode is a somewhat simple package, in the sense it is just a set of files to be read by Emacs. In this sense it works very well.

However, in order to include it in MELPA database, there are many rules to follow. We need some way to automatize this.

[svmhdvn]

https://github.com/riscy/melpazoid I think this should work perfectly right? I don't have more time this week but I think this looks easy enough to integrate based on the instructions.

[AndersonTorres]

Looks fine!