[gtk] (21 commits) Non-fast-forward update to branch wip/baedert/nodeeditor

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/nodeeditor' 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:

  25fbc14... Add gtk4-node-editor
  a7902ef... Parse render nodes from text files
  b40b0f4... testsuite: Add tests for the new node parser
  556e7b7... testsuite: Port gl tests to text-based format
  2fe9cfc... Move working tests to new directory
  9c72a27... testsuite: Add a broken test
  d9c9518... build: don't use 'continue'
  da73cdc... testsuite: Add serialize-deserialize tests
  6ca958e... testsuite: Add nodeparser test case
  485ab91... testsuite: add another nodeparser crash test
  b12f97e... testsuite: add shadow node parser test
  6b089b1... testsuite: Print serialized nodes when parsing fails
  8fa6ada... testsuite: Remove broken GL comparison tests
  5bb4d7e... testsuite: Add cross-fade-in-opacity test
  78d6fbc... testsuite: Add another gl renderer test
  1b809bc... rendernode: Remove old GVariant (de)serialization code
  7e8b135... testsuite: Remove old cairo/vulkan tests
  8e24a64... gl renderer: bind the texture framebuffer before rendering
  275ddd9... gl renderer: Keep op builder around
  ccf0d08... testsuite: Remove another test case

Commits added to the branch:

  e13d242... gl renderer: Keep op builder around (*)
  ba6fd06... gl renderer: bind the texture framebuffer before rendering
  9a4dceb... Add gtk4-node-editor
  e918d68... Parse render nodes from text files
  83664e0... testsuite: Add tests for the new node parser
  02d3a36... testsuite: Port gl tests to text-based format
  e0f1825... Move working tests to new directory
  d4b9946... testsuite: Add a broken test
  c332416... build: don't use 'continue'
  6c3d884... testsuite: Add serialize-deserialize tests
  6a0ef78... testsuite: Add nodeparser test case
  0540606... testsuite: add another nodeparser crash test
  218128a... testsuite: add shadow node parser test
  04f21a1... testsuite: Print serialized nodes when parsing fails
  4ca5578... testsuite: Remove broken GL comparison tests
  e8352b8... testsuite: Add cross-fade-in-opacity test
  8f1aba4... testsuite: Add another gl renderer test
  a2fc10b... rendernode: Remove old GVariant (de)serialization code
  f2d4201... testsuite: Remove old cairo/vulkan tests
  c8fd39a... testsuite: Remove another test case
  0321868... Add error func to node deserialization

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