[polari] (5 commits) Non-fast-forward update to branch wip/fmuellner/ci-snapshots

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/fmuellner/ci-snapshots' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  4df0c6f... build: Use separate config.h
  c5ccdb1... Add SNAPSHOT compile-time option
  b5831f7... main: Split out ARGV creation
  0e211d5... main: Inject --test-instance option when built with -DSNAPS
  d922579... ci: Generate snapshot builds
  006e08e... ci: Set a cache key

Commits added to the branch:

  53b9fea... ci: Set a cache key (*)
  f37b924... build: Add config header
  46d6743... main: Split out ARGV conversion
  e9634db... build: Add support for 'snapshot' builds
  4a89a6e... ci: Build flatpak bundle as snapshot

(*) This commit already existed in another branch; no separate mail sent