Add support for C (#401)
Add support for C (#401)

* add support for publishing C

* add error output for cases where tags are not found

tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools