Replace print with logger if they are logs (#905)

* Add get_my_logger()

* Use logger instead of print

* Fix log level

* Removed line-breaks for readability

* Use setup_logging()

* Add rich to requirements.txt

* Make simple

* Use logger instead of print

---------

Co-authored-by: Kohya S <52813779+kohya-ss@users.noreply.github.com>

requirements.txt

@@ -29,5 +29,7 @@ huggingface-hub==0.20.1
 # protobuf==3.20.3
 # open clip for SDXL
 open-clip-torch==2.20.0
+# For logging
+rich==13.7.0
 # for kohya_ss library
 -e .