test: add conformance test golden outputs

tests/Chip8.Tests/goldens/bctest.txt

@@ -0,0 +1,32 @@
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+                     ####     ####   #    #                     
+                     #   #   #    #  ##   #                     
+                     #   #   #    #  # #  #                     
+                     ####    #    #  #  # #                     
+                     #   #   #    #  #   ##                     
+                     #   #   #    #  #    #                     
+                     #   #   #    #  #    #                     
+                     ####     ####   #    #                     
+                                                                
+                                                                
+                                                                
+                                                                
+                                                                
+  ##             ##             #    ###         #              
+  # #            # #            #    #           #              
+  # #  # #       # #   ##   ##  ##   #     #     #   ##         
+  ##   # #       ##   # #  #    #    #    # #   ##  # #   ##    
+  # #  ###       # #  ##    #   #    #    # #  # #  ##    #     
+  # #    #       # #  #      #  #    #    # #  # #  #     #     
+  ##     #       ##    ##  ##    ##  ###   #    ##   ##   # #   
+       ###