generate lunr index

[BryanWilhite]

• [x] add publications test method to generate index
• [x] add publications test method to GZIP compress the index
• [x] add publications test method to upload compressed index to Azure storage

https://gunnarpeipman.com/azure-blob-storage-gzip-cache-control/

https://docs.microsoft.com/en-us/archive/blogs/cloud_solution_architect/compressing-your-block-blobs-before-storing-them

[BryanWilhite]

🐰 🕳 i have opened https://github.com/BryanWilhite/SonghayCore/issues/88 because of work on this issue

[BryanWilhite]

taking guidance from Microsoft's code sample: https://docs.microsoft.com/en-us/dotnet/api/system.io.compression.gzipstream?view=netstandard-2.1

[BryanWilhite]

loading the URI in a browser shows that it is coming back as text :bulb: