[Image Preproc] Packing into a module

[Nana2929]

Main Contributor: @zhiao777774

[Nana2929]

TODO

• [x] filter images: Some images under the same mod_organ may go thru preproc, some may not be preprocessed. Define this gate.
• [x] Integrate @00757033 X-ray preproc
• [x] Integrate ABD_CT preproc