Add refeed via service bus

API:

• Added feeder to refeed requests that were in a NEEDS TO BE PROCESSED state.
• Processor looks for events on the service bus

Proxy:

• Backup request meta data on shutdown
• Remove backups once request is complete.
• Re-feed incoming requests on the service bus
• Fix gemini usage stats regular expression
• Send update status on service bus

What's Changed

• Feature/eventgrid by @nagendramishr in #92

Full Changelog: v2.2.5...v2.2.6