[Rust][Services] Update services codegen to use WoT

[vaavva]

This PR:

• updates the rust services codegen script to use the new codegen and WoT files
• regenerates the codegen files for the services
• adjusts the service client code (only needed for Schema Registry) to handle codegen output changes related to enums.
  • A few decisions were made here:
  • to avoid churn as much as possible, the service client will return an AIOProtocolError::PayloadInvalid to match the error that would have previously been returned if the payload didn't conform to one of the correct enum values during deserialization. This maintains the same error checking as before.
  • The one change is that the nested error returned is not the same since it no longer originates from serde_json. However, the information provided in the error message conveys similar information even though it is on a different field and not an exact match.

[Copilot]

Pull request overview

This PR updates the Rust services code generation to use the new WoT (Web of Things) Thing Model-based codegen (v1.0.0.0) instead of the DTDL-based codegen (v0.10.0.0). The changes regenerate all service client code and adapt the Schema Registry client to handle enum-to-const conversions and field renames introduced by the new code generator.

Changes:

• Updates code generation script to use codegen2 with WoT Thing Models
• Regenerates Schema Registry, ADR Base Service, and Device Discovery Service client code
• Converts enums to constants/strings (Format, SchemaRegistryErrorCode, SchemaRegistryErrorTarget)
• Adapts Schema Registry client code with TryFrom implementations for type conversions
• Updates field names (e.g., error → put_error/get_error) and hardcodes topic patterns

Reviewed changes

Copilot reviewed 194 out of 194 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
rust/azure_iot_operations_services/gen.sh	Updates generation script to use codegen2 with WoT Thing Models and new CLI arguments
rust/azure_iot_operations_services/src/schema_registry.rs	Adds TryFrom implementations to convert from generated i32/String types to wrapper enums with validation
rust/azure_iot_operations_services/src/schema_registry/client.rs	Updates error handling to use new TryFrom conversions and renamed error fields
rust/azure_iot_operations_services/src/schema_registry/schemaregistry_gen/**/*.rs	Regenerated code: enums → const, version bump, field renames, documentation updates
rust/azure_iot_operations_services/src/azure_device_registry/adr_base_gen/**/*.rs	Regenerated code: removes MODEL_ID constants, hardcodes topics, enums lose serde renames
rust/azure_iot_operations_services/src/azure_device_registry/device_discovery_gen/**/*.rs	Regenerated code: similar patterns to adr_base_gen with enum and topic changes