Added default.yaml and stanford cars dataset

Added

• Stanford cars dataset with training fast usage
• Model loading in meta-train
• Changelog
• Learning rate to tensorboard summary
• Early Stopping with count and delta
• defaults.yaml file with all configurations according to ultralytics
• entrypoint in src
• release

Fixed

• Remaining hyperparams to yaml config file
• tests for default and entrypoint

Changed

• Readme description
• Datasets loading between meta train/val and meta test
• meta_train, meta_test, learn_centroids, predict into entrypoint
• get_allowed_datasets into ALLOWED_BASE_DATASETS in init
• argument names from ultralytics
• version to 1.1.0

Removed

• .