[vala] (17 commits) Non-fast-forward update to branch wip/ci

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/ci' 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:

  f6eb9e3... coverage: Build gidl-bindings
  8c68d6f... ci: Add .gitlab-ci.yml
  49717fb... ci: Add ubuntu:16.04 run with gcc
  93c1751... ci: Add ubuntu:18.04 run with gcc
  b189f0f... ci: Add fedora:rawhide run with clang
  293dd8f... ci: Add archlinux/base:latest run with gcc
  8d1a6ed... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  c4814bb... ci: Add alpine:edge run with gcc
  86a3560... ci: Always deploy

Commits added to the branch:

  0fb0390... girwriter: Write instance-parameter elements (*)
  19ed565... Add support for 'opaque' compact classes (*)
  ade577c... libvaladoc: Correctly retrieve value for Api.Class.is_compa (*)
  a7d6533... vala: Make Class.is_compat/is_immutable/is_singleton read-o (*)
  833f373... girparser: Discover our very own array length fields (*)
  1e8c8e2... gtk4: Update to 4.0.2 (*)
  e1f0316... gstreamer: Update from 1.19.0+ git master (*)
  d54925c... vapi: Update GIR-based bindings (*)
  1a5285f... coverage: Build gidl-bindings
  4515d50... ci: Add .gitlab-ci.yml
  1ea28e6... ci: Add ubuntu:16.04 run with gcc
  c282e85... ci: Add ubuntu:18.04 run with gcc
  0ae0a63... ci: Add fedora:rawhide run with clang
  200756a... ci: Add archlinux/base:latest run with gcc
  b1414f4... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  cb41cf1... ci: Add alpine:edge run with gcc
  1debb46... ci: Always deploy

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