moved internal function out of examples and into a new internal folder

Author: stevevanhooser

examples/fmriDenoiserNetwork.m renamed to internal/fmriDenoiserNetwork.m

@@ -5,5 +5,6 @@
     addpath(fullfile(base_folder, "network_layers"))
     addpath(fullfile(base_folder, "sample_data"))
     addpath(fullfile(base_folder, "examples"))
+    addpath(fullfile(base_folder, "internal"))
     addpath(fullfile(base_folder, "datastore"))
-end
+end