5.22 Soft Freeze

[David Edmundson]

At the end of the day is the soft freeze for Plasma 5.22, with the
beta out on the 13th of May.

After this point we should avoid any huge refactors and big features
until we split the branch.

Small features and changes can still land, we just now start to be
cautious so things can get an appropriate amount of testing before the
beta.

Also please note that we will be using the next frameworks (tagged
this Saturday).

Please do comment if anything is stuck in review and needs attention.

David