Use Azure Storage for write store

[isaacabraham]

Insert all price paid data into Azure Table storage as a write store and simplify the Azure Search index to only capture data that is either searched on or used for displaying search results i.e. as a read store. Details screen would read the full entity from Table Storage.

• [ ] Web Job or Azure Function to update search index after data is written to the table storage
• [ ] Progress to user (correlation id or similar)
• [ ] Update Azure Search structure
• [ ] Update details view to retrieve data from Table