22.0.2 SDK Documentation Portal

We have a new documentation portal! We hope we will be able to serve developers better by providing an integrated documentation portal. For now it includes a combination of all the content found in the readme's, a migration guide and links to the release notes and changelog, to be expanded on in the future. You can find it here: https://bloomreach.github.io/spa-sdk/docs/
We welcome any feedback on it and requests to add content.

We also removed the OnPush changedetection from the angular components, fixing this issue.