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/Features/Features.Locations/DependencyInjection/FeaturesLocationsServiceCollectionExtensions.cs

@@ -0,0 +1,13 @@
+using Features.Locations.Repository;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Features.Locations.DependencyInjection;
+
+public static class FeaturesLocationsServiceCollectionExtensions
+{
+    public static IServiceCollection AddFeaturesLocations(this IServiceCollection services)
+    {
+        services.AddScoped<ILocationRepository, LocationRepository>();
+        return services;
+    }
+}