Make @googleapis/cloudcommerceprocurement Ready to Distribute

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**Is your feature request related to a problem? Please describe.**
We are not able to install @googleapis/cloudcommerceprocurement as a package and use it.
**Describe the solution you'd like**
Expose cloudcommerceprocurement API

The request names @googleapis/cloudcommerceprocurement and asks for the cloudcommerceprocurement API to be exposed as an installable package. Start by locating the repository entry points for generated API packages and compare how another exposed API is distributed. Done means the package can be installed and used, with the relevant checks or tests passing.

Scritto dal modello di indicizzazione a partire dal testo della issue.