[gnome-software: 6/6] Merge branch '603-gnome-software-reports-unknown-error-when-there-is-a-signing-issue' into 'main'

[Philip Withnall <pwithnall src gnome org>]

commit 9df2647010d5510404bdee7dafc5910ff6f9635a
Merge: 450309c13 6e6175f82
Author: Philip Withnall <philip tecnocode co uk>
Date:   Mon Nov 29 17:07:04 2021 +0000

    Merge branch '603-gnome-software-reports-unknown-error-when-there-is-a-signing-issue' into 'main'
    
    Resolve "GNOME Software reports unknown error when there is a signing issue"
    
    Closes #603
    
    See merge request GNOME/gnome-software!836

 lib/gs-plugin-loader.c                            |  25 +++
 lib/gs-plugin.c                                   |  43 ++++
 lib/gs-plugin.h                                   |  12 +-
 plugins/packagekit/gs-packagekit-task.c           | 243 ++++++++++++++++++++++
 plugins/packagekit/gs-packagekit-task.h           |  32 +++
 plugins/packagekit/gs-plugin-packagekit-refresh.c |   9 +-
 plugins/packagekit/gs-plugin-packagekit.c         |  37 ++--
 plugins/packagekit/meson.build                    |   2 +
 plugins/packagekit/packagekit-common.c            |  15 ++
 po/POTFILES.in                                    |   1 +
 src/gs-common.c                                   |  86 +++++++-
 src/gs-common.h                                   |   5 +
 src/gs-shell.c                                    |  14 ++
 13 files changed, 491 insertions(+), 33 deletions(-)
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