load_mmar prints lots of information on console

[SachidanandAlle]

Too many print statements while using load_mmar.
Can we use logger? So that user can control if these wants to be displayed or not instead of using print function

Expected md5 is None, skip md5 check for file /local/sachi/Projects/MONAILabel/sample-apps/segmentation_spleen/model/clara_pt_spleen_ct_segmentation_1.zip.
File exists: /local/sachi/Projects/MONAILabel/sample-apps/segmentation_spleen/model/clara_pt_spleen_ct_segmentation_1.zip, skipped downloading.
Non-empty folder exists in /local/sachi/Projects/MONAILabel/sample-apps/segmentation_spleen/model/clara_pt_spleen_ct_segmentation_1, skipped extracting.
*** "clara_pt_spleen_ct_segmentation_1" available at /local/sachi/Projects/MONAILabel/sample-apps/segmentation_spleen/model/clara_pt_spleen_ct_segmentation_1.
*** Model: <class 'monai.networks.nets.unet.UNet'>
*** Model params: {'dimensions': 3, 'in_channels': 1, 'out_channels': 2, 'channels': [16, 32, 64, 128, 256], 'strides': [2, 2, 2, 2], 'num_res_units': 2, 'norm': 'batch'}
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For more information, please visit https://ngc.nvidia.com/catalog/models/nvidia:med:clara_pt_spleen_ct_segmentation