[gnome-software: 3/3] Merge branch '1206-devel-builds' into 'master'

[Philip Withnall <pwithnall src gnome org>]

commit b2718ba3fa8229d23f19adfc970231b834c6b0c0
Merge: ba9dc0532 0c6b103b7
Author: Philip Withnall <philip tecnocode co uk>
Date:   Mon Apr 19 15:55:18 2021 +0000

    Merge branch '1206-devel-builds' into 'master'
    
    ci: Add an on-demand flatpak bundle build
    
    Closes #1206
    
    See merge request GNOME/gnome-software!700

 .gitlab-ci.yml                      |  33 ++++++++
 README.md                           |  17 ++++-
 contrib/org.gnome.SoftwareDevel.yml | 145 ++++++++++++++++++++++++++++++++++++
 meson.build                         |  10 +++
 meson_options.txt                   |   1 +
 src/gs-application.c                |  14 +++-
 6 files changed, 217 insertions(+), 3 deletions(-)
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