Clang AddressSanitizer & ThreadSanitizer in CI

Add [ThreadSanitizer](https://clang.llvm.org/docs/ThreadSanitizer.html) & [AddressSanitizer](https://clang.llvm.org/docs/AddressSanitizer.html) in CI. 

AddressSanitizer is added in https://github.com/OpenNMT/CTranslate2/pull/1903 . As soon as it is merged, I plan to create an PR for ThreadSanitizer as well. 