Release v7.0

[ddemeyer]

• [x] Create a new Milestone... done, see https://github.com/RWS/ISHRemote/milestone/11
• [ ] Start and edit release notes on https://github.com/sdl/ISHRemote/releases/
  • All issues/changes should be listed, crosslinked to issue (like #142) with potential Thank you
  • Examples added where possible
• [x] Optionally start and edit a blog post when significant changes happen that need extra explanation. Do this under https://github.com/RWS/ISHRemote/tree/master/Doc like https://github.com/RWS/ISHRemote/blob/master/Doc/ReleaseNotes-ISHRemote-7.0.md
• [ ] Release means, bump version to release version 7.1.0 and build as debug and release
  • Run Pester tests on various product versions and flavours
• [ ] Release by publishing to PSGallery on https://www.powershellgallery.com/packages/ISHRemote/
  • See ISHRemote.SignAndPublish.ps1
• [ ] Close this issue
• [ ] Close the github Milestone