[chore] rename all internal references for work-creator -> pipeline-adapter

[abangser]

Kratix uses a utility image to run actions both before and after the Promise defined workflows. These actions used to be limited to just creating works and therefore the image was named work-creator. Since then the actions have expanded scope and we have started to use an image called pipeline-adapter however internal to our codebase we still reference work-creator. We should update this as it will get more confusing as time moves on and people are less familiar with its history.

[kirederik]

before a blind sed and replace is done, be aware that some occurrences of work-creator actually refer to the work-creator binary :D