Migrate frontend Azure authentication code to the shared library #1
Description
Work involved for migrate all frontend code of Azure authentication support to this shared library.
### Tasks
- [ ] https://github.com/grafana/grafana-azure-sdk-react/issues/2
- [ ] Azure Monitor: AzureCredentials from Azure React SDK
- [ ] https://github.com/grafana/grafana/pull/82344
- [ ] https://github.com/grafana/azure-data-explorer-datasource/pull/767
- [ ] Move credentials read/write logic from Prometheus datasource to the library
- [ ] Extend credentials read/write logic with pluggable support for migrations from older credentials format
- [ ] Move ADX credentials read/write logic to the library
- [ ] https://github.com/grafana/grafana/issues/75123
- [ ] Move Azure Monitor read/write credentials logic to the library
- [ ] Move credentials UI from Prometheus datasource to the library
- [ ] Move credentials UI from Azure Monitor datasource to the library
- [ ] Move credentials UI from Azure Data Explorer datasource to the library
- [ ] https://github.com/grafana/grafana/pull/79932