extension recommendation model 202304

[ShuoZhang-dev]

• Add vscode extension recommendor quantized onnx model.
• Offline evaluation precisions: top1 - 21.99%, top3 - 34.09%, top5 - 37.60%, top10 - 42.00%
• For extension popularity shift, go to data inventory https://ms.portal.azure.com/#view/Microsoft_Azure_Storage/ContainerMenuBlade/~/overview/storageAccountId/%2Fsubscriptions%2Feab7e220-5366-4954-bf3c-80193d859301%2FresourceGroups%2Fsmldatascience%2Fproviders%2FMicrosoft.Storage%2FstorageAccounts%2Fsmldatasciencepub/path/vscodeextecosystem/etag/, relative path of the csv file: /vscode_ext_recommender/extension_popularity_shift/1.6/extension_popularity_shift_1.10_to_1.11.csv