09_vision.augment: create docments

[warner-benjamin]

Add docments to 09_vision.augment.

See the style guide and contribution guide for more details (links will be added when created).

This requires a moderate familiarity with fastai and the vision augmentation pipeline..

Docments progress:

• [x] RandTransform
• [x] Item transforms
• [ ] Resize with crop, pad or squish
• [ ] RandomCrop
• [ ] Resize
• [ ] RandomResizedCrop
• [ ] RatioResize
• [ ] AffineCoordTfm
• [ ] RandomResizedCropGPU
• [ ] GPU helpers
• [ ] Flip/Dihedral GPU Helpers
• [ ] Flip
• [ ] Dihedral
• [ ] Rotate
• [ ] Zoom
• [ ] Warping
• [ ] Lighting transforms
• [ ] RandomErasing
• [ ] All together

[dienhoa]

I'd like to assign this issue to me for my 1st contribution for docment

[dienhoa]

We can tick on tasks:

• Resize with crop, pad or squish
• RandomCrop
• Resize
• RandomResizedCrop
• RatioResize as they are solve here: https://github.com/muellerzr/fastai-docment-sprint/pull/81#event-6174206023