Add documentation for the laco_dispatch function

Author: sourrust

src/commands.h

@@ -10,6 +10,13 @@ struct LacoCommand {
   LacoHandler handler;
 };
 
+/**
+ * Goes through each instance from the list of commands and see if there is
+ * a match with for command_keyword. When there is a match, the defined
+ * handler inside the LacoCommand gets called -- passing in LacoState and
+ * the arguments. The list of commands expects the last entry of the array
+ * to be `{ NULL, NULL }` for ease of iteration.
+ */
 void laco_dispatch(const struct LacoCommand* commands,
                    struct LacoState* laco, const char* command_keyword,
                    const char** arguments);