tsp, fill spector tests

[weidongxu-microsoft]

Refer to this PR to see test cases that should be added: https://github.com/microsoft/typespec/pull/9172/files

documentation and specialwords should be supported and can add tests.

-------Added by Haoling-----
Follow https://github.com/microsoft/typespec/blob/main/.github/instructions/http-client-java.instructions.md#add-end-to-end-e2e-test-case for the steps.

.tsp files can be found in https://github.com/microsoft/typespec/tree/main/packages/http-specs/specs and https://github.com/Azure/typespec-azure/tree/main/packages/azure-http-specs/specs