Now inherits from ImageEffect and uses a ShaderImageEffect to generate the image. We get to clear duplicate code that was shared between ShaderEffect.gd and ShaderImageEffect.gd this way, and it also uses the undo/redo logic from ImageEffect instead of Canvas.gd.
* gdformat .
* Lint code - Part 1
* Format code - Part 2
* Lint code - Part 2
Trying to fix the max allowed line length errors
* Add normal_map_invert_y to the image .import files
Because of Godot 3.4
* Do not call private methods outside of the script's scope
Lint code - Part 3
* Format code - Part 3
* Fixed more line length exceeded errors - Lint code Part 3
* Export array of licenses - Lint code part 4
* Clean hint_tooltip code from Global
Removes a lot of lines of code
* Create static-checks.yml
* Fix FreeType's license
Not sure if this actually solves the issue or just makes it more rare, but I haven't been able to reproduce any PoolVector locking issues so far. The problem was that images were remained locked essentially all the time, which seemed to cause issues. Maybe other PoolVectors could not get locked?
This comes with the benefit that we no longer need a Viewport node in the ShaderEffect dialog, which lets us have the Preview TextureRect at a fixed size. Previously, the preview was scaled based on the image's size, which would make applying shaders to large images very inconvenient, since the dialog would be way too big.
