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/City.cs

@@ -0,0 +1,8 @@
+namespace Domain.Entities;
+
+public class City
+{
+    public Guid CityId { get; set; }
+    public string CityName { get; set; } = string.Empty;
+    public Guid StateProvinceId { get; set; }
+}