Xarray-dataclasses

- 80 Update mix-in classes
- 78 Update typedarray function
- 76 Rename module (parser → datamodel)
- 74 Update parser module
- 71 Refactor typing runtime functions
- 70 Update dataclass type
- 68 Add deprecated module
- 66 Add development container
- 63 Update README

- 59 Add type hints for creating data/coord field from DataArray class
- 56 Update dev environment
- 55 Add new dataclass parser
- 52 Remove verbose or unused internal functions
- 50 Add factory fields for custom DataArray/Dataset creation