Aaron Carlisle
e17ac8dc58
Currently, most node buttons are defined in `drawnode.cc` however, this is inconvenient because it requires editing many files when adding new nodes. The goal is to minimize the number of files needed to add or update a node. This commit moves most of the node layout functions for shader nodes into their respected source/blender/nodes/shader/nodes file. In the future, these functions will be simplified to node_layout. Some nodes were left in `drawnode.cc` as this would require duplicating code while this is likely fine it is best to leave that to a seperate commit.