Issue #2992184 by Steven Jones: Fix code style issues

config/install/imageapi_optimize.settings.yml

css/imageapi_optimize.admin.css

imageapi_optimize.module

src/Annotation/ImageAPIOptimizeProcessor.php

src/Entity/ImageAPIOptimizePipeline.php

src/Entity/ImageStyleWithPipeline.php

src/Form/ImageAPIOptimizeDefaultPipelineConfigForm.php

src/Form/ImageAPIOptimizePipelineAddForm.php

src/Form/ImageAPIOptimizePipelineDeleteForm.php

src/Form/ImageAPIOptimizePipelineEditForm.php

src/Form/ImageAPIOptimizePipelineFlushForm.php

src/Form/ImageAPIOptimizePipelineFormBase.php

src/Form/ImageAPIOptimizeProcessorAddForm.php

src/Form/ImageAPIOptimizeProcessorDeleteForm.php

src/Form/ImageAPIOptimizeProcessorEditForm.php

src/Form/ImageAPIOptimizeProcessorFormBase.php

src/ImageAPIOptimizeHookImplementations.php

src/ImageAPIOptimizePipelineListBuilder.php

src/ImageAPIOptimizeProcessorBase.php

src/ImageAPIOptimizeProcessorInterface.php