Geometry Nodes: Replace String node

This commit adds a node that can be used to find and replace strings
inside of the input string. One initial use case is to have an easier
way to add line breaks to strings to the string to curves node.

Differential Revision: https://developer.blender.org/D12721

source/blender/blenkernel/BKE_node.h

@@ -1566,6 +1566,7 @@ int ntreeTexExecTree(struct bNodeTree *ntree,
 #define FN_NODE_ROTATE_EULER 1215
 #define FN_NODE_ALIGN_EULER_TO_VECTOR 1216
 #define FN_NODE_INPUT_COLOR 1217
+#define FN_NODE_REPLACE_STRING 1218
 
 /** \} */