Multiple changes:

- Add the book and a few first pages
- Add the code generator

src/Carp/CarpExpression.class.st

@@ -0,0 +1,10 @@
+Class {
+	#name : #CarpExpression,
+	#superclass : #Object,
+	#category : #'Carp-IDE'
+}
+
+{ #category : #converting }
+CarpExpression >> toCarp [
+	^ self subclassResponsibility
+]