Add resnet esc50 notebook

[PariaValizadeh]

train resnet on esc50 to close issue

Roadmap

• [x] get datamodule
• [x] get trainer
• [x] initialize model
• [x] train model
• [x] eval model

[raphaelschwinger]

@PariaValizadeh Here are a lot more files changed then just the notebook for training resnet on esc50. Could you tidy up the PR?

[PariaValizadeh]

I tried tp clean up pr b7f24a9374f5ad95e1abc0605ee62c8a8eb06f5a