Figure out versioning number handling

[Robin481]

We haven't really updated the Skills version in recent history.

We should probably define how we handle the versioning and when we update the number.

It would make sense in my mind to always increment the patch number for each PR.

We could probably just follow semantic versioning https://semver.org/

TODO:

• Define how we handle versioning and document in the README
• Make sure current PRs set a relevant number
• Figure out how we can handle versioning between multiple PRs
• Maybe we can have some form of bot that automatically sets the version number (create follow up ticket if necessary)

[nevio18324]

The concept is obviously going to be semantic versioning but i searched around a little bit and i think the best thing we could use is release-please it should work with ruby and PCTS already uses release-please so implementing it again shouldn't be too difficult.