We remember what action we took for EOLs, and for sub-refs (ie .Locale)
we reuse that.
Also, we show if eol:ed refs are pinned (as that makes them not be
auto-uninstalled), and we list the apps that use the eol:ed runtime
ref.
Example run:
```
Looking for updates…
Info: (pinned) org.gnome.Sdk.Compat.i386 is end-of-life, with reason:
The GNOME 3.34 runtime is no longer supported as of 14th August 2020. Please ask your application developer to migrate to a supported platform.
Info: org.gnome.Platform is end-of-life, with reason:
The GNOME 3.32 runtime is no longer supported as of 11th March 2020. Please ask your application developer to migrate to a supported platform.
Applications using this runtime:
org.gnome.HexGL
```