shader_connections_add_connection
Adds a shader graph connection to a target selector from a source selector.
arguments
- 
"element_name" : StringThe name of the shader, shader graph, or shader graph class. This name must be the full database name of the element, including namespace. 
- 
"source_selector" : StringThe source selector composed of an optional node name followed by a dot, an input or output parameter name, followed by a sequence of optional array selectors and struct field selectors. 
- 
"target_selector" : StringThe target selector composed of an optional node name followed by a dot, an input or output parameter name, followed by a sequence of optional array selectors and struct field selectors. 
