Add a static CHANGELOG.md containing the release history

[SebastianBezold]

Is your feature request related to a problem? Please describe.
TRG 1.03 describes, that every Tractus-X repo must contain a CHANGELOG.md file, that contains a short overview of the current and past releases.
The info present on the GitHub releases like for example on 0.5.0 is really good. It can be used "as-is" in the CHANGELOG.md as well.

Describe the solution you'd like
As far as I can remember, there has been a CHANGELOG.md for the Tractus-X EDC in the past. If this can still be found, I think it should be added again and the current 0.5.0 release info added as well.

Describe alternatives you've considered
Replacing the CHANGELOG.md by just having the change description on the GitHub release would remove the possibility to browse easily through the release history. One would have to go through all of the GitHub releases (also RCs), which is just not as convenient as having it in one place

Additional context
Add any other context or screenshots about the feature request here.

blocks #714

[dsukhoroslov]

it was removed intentionally, AFAIK: https://github.com/eclipse-tractusx/tractusx-edc/blob/0.5.1/docs/development/decision-records/2023-07-06_removing_manual_changelog/README.md

[SebastianBezold]

Hi @dsukhoroslov, thanks for pointing that out. So it seems, the CHANGELOG.md will be added again. This is a good thing, because the decision is actually violating the project rules (which is the release Guidelines). So I hope this is not too much effort. The auto-generated release notes on a GitHub release seem quite well structured, so I think they can just be copy/pasted to the CHANGELOG, so the release history is continued

[wolf4ood]

closed by #733