Add createNamespace(), and prefix + totalCount to listNamespaces()#205

rohanshah18 merged 2 commits intorshah/release-candidate/2025-10pinecone-io/pinecone-java-client:rshah/release-candidate/2025-10from

rshah/namespacespinecone-io/pinecone-java-client:rshah/namespacesCopy head branch name to clipboard