transformations: use albumentations

Feature request

How is your feature request or suggestion related to this project ?

• We would like the resize transform not to crop to square, but rather resize to a target dimension (while keeping aspect ratio)
• We would like to chose the size of text in add_textual_element transform (in addition to chosing the text location)

Describe the feature or suggestion you'd like to be implemented

• Current transforms code could be simplified using package albumentations
• Edit resize and add_textual_element transforms according to above

Optional improvement :

• Aspect ratio