[llvm] [IR2Vec] Exposing Embedding as an ADT wrapped around std::vector<double> (PR #143197)

[Snehasish Kumar via llvm-commits]

snehasish wrote:

ADT has a well defined meaning in LLVM. On reading the title I expected something new to be added to llvm/ADT but this is local to IR2Vec. Can you drop the usage of ADT in the title and code?

https://github.com/llvm/llvm-project/pull/143197