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

[S. VenkataKeerthy via llvm-commits]

svkeerthy wrote:

### Merge activity

* **Jun 10, 10:11 PM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/143197).


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