Create release r0.6

[akoshunyadi]

Problem description Create release r0.6 with the API version v0.6.0-alpha.1 to get early developer feedback for the changes of v0.6.0 without the issue Separate endpoints into different , which should be implemented after this release, for the RC1.

Expected action Following changes should be performed:

• New PR to prepare the release

  update device-status.yaml with the version 0.6.0-alpha.1
  update changelog.md update readme.md

• Create release

Additional context

release numbering

[akoshunyadi]

Titel and description updated according to the release numbering guideline.

[akoshunyadi]

Release has been created: https://github.com/camaraproject/DeviceStatus/releases/tag/r0.6

[akoshunyadi]

done