test: add clutterUtils
StateComponent: mix params and datas
ClutterCoglContext: fix Clutter inclusion
CoglPipeline: fix Cogl inclusion
CoglPipeline: make pipeline a param
CoglPipelineCopy: fix callback
CoglTexture: rework Cogl inclusion
CoglSnippet: rework Cogl inclusion
CoglPipelineSetTexture: fix input ports connections
ClutterPipelineContent: use clutterUtils
test: add simple Cogl test