Changes

Summary

1. Fixes: #8143 first moved extension to shift classbuilder (details)
2. Cleaning protocols (details)

Commit fdfe15ec38b16d7493684b5555f89efc27f7dd56 by stephane.ducasse Fixes: #8143 first moved extension to shift classbuilder
	src/FluidClassBuilder/ShiftClassBuilder.extension.st
	src/Shift-ClassBuilder/ShiftClassBuilder.class.st (diff)
Commit 6ba128d02465430be6bb98f2abb2b7c166a3e97c by stephane.ducasse Cleaning protocols
	src/FluidClassBuilder/FluidClassBuilder.class.st (diff)
	src/FluidClassBuilder/FluidTraitBuilder.class.st (diff)