Add more math nodes (#1378)

* Adds Max, Min and Equal Nodes

* Add LogToConsoleNode

Logs the data given as the input to the browser console and returns it
as the output

node-graph/gcore/src/lib.rs

@@ -9,6 +9,7 @@ extern crate log;
 
 pub mod consts;
 pub mod generic;
+pub mod logic;
 pub mod ops;
 pub mod structural;
 #[cfg(feature = "std")]