Generate SDKs from Converted TypeSpec Specifications for Internal Validation

[mario-guerra]

Description:
Generate SDKs from brownfield converted TypeSpec specifications for internal validation purposes only. These SDKs will be used to ensure that the conversion process does not introduce any breaking changes and that the generated SDKs behave correctly. The SDKs should not be published to customers. Instead, existing SDK tests should be used to validate the correctness of the conversion.

Tasks:

1. Set up the necessary infrastructure to generate SDKs from the TypeSpec specifications in the "typespec-conversion" branches.
2. Configure the SDK generation process to ensure that the generated SDKs are used for internal validation only and are not published to customers.
3. Run existing SDK tests on the generated SDKs to validate the correctness of the conversion.
4. Document the process and provide guidance to service teams on how to use the generated SDKs for validation.

[maririos]

@raych1 will running Spec gen SDK will be enough for this? If so, we need to make sure that once the Typespec-conversion branch is created, that automation is enabled on it