[Go] Parser support restructure for tree tokens

[maririos]

As part of #5897, the language parsers need to be updated to the new tree structure format.

Documentation can be found here: https://github.com/Azure/azure-sdk-tools/blob/main/tools/apiview/parsers/CONTRIBUTING.md

Work from APIView team

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1. Work with Go team to update parser, eliminate invalid packages like v2, v3 #7734
   APIView Central-EngSys Go +3
2. Enable Go in APIView
3. Convert existing reviews
4. Test changes in Staging
5. Deploy changed to Prod
6. Address any cleanup issue

Work for Go team

Beta Give feedback

1. Convert parser apiviewgo supports tree tokens #8654
2. Test changes in staging