Make the playground ready for use by newcomers to try out mirrord

[t4lz]

Make it easy for newcomers that just found out about mirrord to set up the playground on their own cluster and start trying out mirrord with it in short time.

edit: removed issue list, as it was not relevant anymore since not all of those issues are required before using in "real world example" section of the website.

Once we do that, we could link the playground in mirrord.dev and other places, inviting people to try mirrord easily on their own cluster with their own preferred language-framework combination.
Maybe videos of the different frameworks for people to follow could make for good content?

[t4lz]

Closing in favour of metalbear-co/mirrord.dev#62