Further cleaned up the code, created utils modules, helpers function for plotting, added unet model with deep supervision

Update src/AutomaticWeightedLoss.py, src/IcyXml.py, src/datasets.py, src/inference.py, src/models.py, src/train.py

Update src/CocoDataFormat copy.ipynb, src/CocoDataFormat.ipynb, src/IcyXml.py,...

See merge request !1

Update src/CocoDataFormat copy.ipynb, src/CocoDataFormat.ipynb, src/IcyXml.py, src/datasets.py, src/linear_regression.ipynb, src/models.py, src/utils/utils.py
Deleted src/lightning_logs/version_0/checkpoints/epoch=97-step=4213.ckpt, src/lightning_logs/version_0/events.out.tfevents.1652087449.rituparna-ubuntu.13069.0, src/lightning_logs/version_0/hparams.yaml, src/lightning_logs/version_14/events.out.tfevents.1652284894.rituparna-ubuntu.31684.0, src/lightning_logs/version_14/hparams.yaml, src/lightning_logs/version_15/checkpoints/epoch=399-step=35175.ckpt, src/lightning_logs/version_15/events.out.tfevents.1652287870.rituparna-ubuntu.27283.0, src/lightning_logs/version_15/hparams.yaml, src/lightning_logs/version_2/checkpoints/epoch=261-step=11265.ckpt, src/lightning_logs/version_2/events.out.tfevents.1652092278.rituparna-ubuntu.19308.0, src/lightning_logs/version_2/hparams.yaml