Adjust auto-release when making a new tag

[ThiaudioTT]

Basically, create a new workflow for when a release tag is created.

Like in:
https://github.com/marketplace/actions/automatic-releases#create-a-new-github-release-when-tags-are-pushed-to-the-repository

This will define a new tag "release" to be the most stable version.

Then checkupdate.py must be updated to reflect the new changes, it should check the version.json in the latest tag.

hoi4-presence/src/checkupdate/checkupdate.py

Line 36 in b3e1862

URL = urllib.request.urlopen("https://raw.githubusercontent.com/ThiaudioTT/hoi4-presence/main/version.json")

This workflow also needs to validate version.json, see #45 is also related.

summary

• Create the new workflow to trigger when a new version tag is created and auto set as the latest release
• Update checkupdate.py to see the latest tag
• Auto bump and validate version.json, related: Auto bump in CI/CD #45