[@fluentui/react-calendar-compat]: Extract Calendar from DatePicker compat into its own package #29438
Description
Issue to track work for Calendar Compat
### Tasks
- [ ] https://github.com/microsoft/fluentui/issues/29439
- [x] Scaffold Calendar Component
- [ ] https://github.com/microsoft/fluentui/issues/29464
- [ ] https://github.com/microsoft/fluentui/issues/29487
- [ ] https://github.com/microsoft/fluentui/issues/29538
- [x] Update tests if needed
- [x] Update styles if needed
- [ ] https://github.com/microsoft/fluentui/issues/29541
- [ ] https://github.com/microsoft/fluentui/issues/29540
- [ ] https://github.com/microsoft/fluentui/issues/29586
react-calendar-compat has been released and can be found in npmjs
Fixes #29374