Fix develop (#12039)

Fixes file encoding errors on Windows, and layouts not correctly merging into info.json.

* force utf8 encoding

* correctly merge layouts and layout aliases

* show what aliases point to

lib/python/qmk/tests/test_cli_commands.py

@@ -16,7 +16,7 @@ def check_subcommand(command, *args):
 def check_subcommand_stdin(file_to_read, command, *args):
     """Pipe content of a file to a command and return output.
     """
-    with open(file_to_read) as my_file:
+    with open(file_to_read, encoding='utf-8') as my_file:
         cmd = ['bin/qmk', command, *args]
         result = run(cmd, stdin=my_file, stdout=PIPE, stderr=STDOUT, universal_newlines=True)
     return result