Replace stored-procedure repositories with Dapper-based repositories

Removes the USP_* stored procedures for Auth, Location, and Brewery
data access in favour of services built with Dapper.

Adds a new Features.Locations slice and optimistic concurrency support
for the Brewery slice.

web/backend/Domain/Domain.Entities/Entities/BreweryPostLocation.cs

@@ -10,5 +10,4 @@ public class BreweryPostLocation
     public Guid CityId { get; set; }
     public byte[]? Coordinates { get; set; }
     public byte[]? Timer { get; set; }
-    public BreweryPost BreweryPost { get; set; } = null!;
 }