Added endpoint to fleetdm.com proxy (#46107)
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**Related issue:** Resolves #41683
fleetdm.com for Android commands:
https://developers.google.com/android/management/reference/rest/v1/enterprises.devices/issueCommand
# Checklist for submitter
## Testing
- [x] QA'd all new/changed functionality manually
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## Summary by CodeRabbit
* **New Features**
* Added a new API endpoint to issue commands to Android Enterprise
managed devices with secure authentication, enterprise/device
validation, dynamic command parameters, management-status checks, and
clear error responses for rate limits, unmanaged devices, and auth
failures.
* Exposed a new Cloud SDK method to invoke the device-command endpoint
from browser/server clients.
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Victor Lyuboslavsky
76b0134b7b
