Loglead

Fixes:
- Add new loaders to init

**Full Changelog**: https://github.com/EvoTestOps/LogLead/compare/v.1.1.1...v1.2.0

Fixes:
- Update RawLoader for timestamp handling
- Improve files not found error message

Features:
- Added loader for lo2 dataset

v.1.1.1
- `LogDistance` supports both string and lists of strings as input
- Better error messages

- Implemented `LogDistance`
- Optimizations and fixes

- Migrated to mature `polars v.1.5` package
- Integrated `Explainer`
- Fixes to `RawLoader`

Works with Polars 1.5.