Classification and domain adaptation functionality

What's Changed

• Implement MeanTeacher Trainer by @constantinpape in #112
• Add support for torch2 by @constantinpape in #113
• Update Prob-DA Source UNet Parameters by @anwai98 in #115
• New datasets and other changes by @constantinpape in #114
• Load utils by @constantinpape in #117
• Update Mean-Teacher and FixMatch Self-Training Scheme(s) by @anwai98 in #116
• Add all necessary tests for mean teacher trainer deserialization by @constantinpape in #118
• Add 2D Probabilistic UNet by @anwai98 in #119
• Add Argument - Target Domain by @anwai98 in #121
• Update Evaluation with Distribution Alignment by @anwai98 in #122
• Add 2D Probabilistic UNet Training Setup by @anwai98 in #123
• Add Probabilistic Self-Training (MT) Approaches by @anwai98 in #125
• Add FixMatch-based Probabilistic Domain Adaptation Setups by @anwai98 in #126
• Make livecell label extraction more robust against duplicate per obje… by @constantinpape in #127
• Add CLI for UNet training and prediction by @constantinpape in #128
• Implement tif support in data loaders by @constantinpape in #130
• Update Prediction Functions for PUNet Domain Adaptation Setups by @anwai98 in #129
• Implement classification functionality by @constantinpape in #120

Full Changelog: 0.4.1...0.5.0