Report deployment and storage environment data in the usage report

[johnsimons]

The usage report already carries throughput, versions and whether audit and monitoring are in
use. It says nothing about how the instance is actually deployed or what it stores data in, so
questions like "how many customers run in containers", "who has moved off embedded RavenDB" or
"is anyone using S3 body storage with an IAM role" cannot be answered from the reports we receive.

This adds environment data covering the host, the persistence, the body storage and the
instance's configuration posture.

Keys

Group	Keys
Host	Host.Model (Container / WindowsService / Console), Host.Orchestrator, Host.OSPlatform, Host.OSVersion, Host.Architecture, Host.RuntimeVersion, Host.ProcessorCount, Host.AvailableMemoryGB
Persistence	Persistence.Type, Persistence.RavenServer (Embedded / External), Persistence.Hosting, Persistence.ServerVersion, Persistence.FullTextSearch
Body storage	Persistence.BodyStorage.Type, Persistence.BodyStorage.Auth, Limits.MaxBodySizeToStore
Posture	Security.Authentication, Security.RoleBasedAuthorization, Security.Https, Features.MessageEditing, Features.ExternalIntegrationsPublishing, Features.ForwardErrorMessages, Features.EmailNotifications, Retention.ErrorHours, Retention.AuditHours, Retention.EventsHours

Keys are dotted strings, following the Features.IntegratedServicePulse key that was already
there. EnvironmentDataType is left alone rather than grown, so adding a datum no longer means
changing a contract.

No customer data

Every value is a fixed enum member, a boolean, a count or a version number. Nothing derived from
a host name, URL, connection string, bucket or container name, managed identity client id, file
path, machine name or endpoint name is emitted. RuntimeInformation.OSDescription is
deliberately not used because on Linux it carries a distro build string that identifies a
specific image. An acceptance test asserts the report carries no value matching the machine name,
and a unit test asserts no S3 bucket name or access key reaches the report.

Cloud database detection

Persistence.Hosting is resolved by asking the engine where it can, and by classifying the
configured host name where it cannot.

SQL Server answers definitively through SERVERPROPERTY('EngineEdition'), where 5, 8 and 11 mean
Azure SQL Database, Managed Instance and Synapse. PostgreSQL has no equivalent, so the probe
checks for the administrative roles that each managed offering creates and a self-hosted server
does not: azure_pg_admin, rds_superuser and cloudsqlsuperuser. Both probes run with a five
second command timeout and fall back to host suffix matching on any failure, so a report is never
held up by a database that will not answer.

Persistence.ServerVersion is the engine major version only. SQL Server's minor is always zero,
and Azure SQL Database reports major 12 regardless of the engine actually running, so
major.minor would add a digit that carries no information. Patch level, if it is ever wanted,
belongs in a separate key sourced from ProductUpdateLevel.