Aim

- Add PyTorch Lightning logger (gorarakelyan)
- Add TensorFlow v1 and v2 keras callbacks support (gorarakelyan)

- Add ability to run Aim UI in detached mode (gorarakelyan)
- Add ability to specify repo path when running Aim UI (gorarakelyan)

- Rename `AimDE` to `Aim UI` (gorarakelyan)

- Add ability to specify host when running AimDE (gorarakelyan)
- Disable `AimContainerCommandManager` (gorarakelyan)
- Remove `aimde` command entry point (gorarakelyan)
- Remove `de` prefix from development environment management commands (gorarakelyan)

- Set Map artifact default namespace (gorarakelyan)

- Set Metric hashable context to None if no kwarg is passed (gorarakelyan)