Add remaining project files

Services/PasswordService.cs

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+using Microsoft.AspNetCore.Identity;
+using System.Numerics;
+using DeluxeBackend.Models;
+
+namespace DeluxeBackend.Services
+{
+    public interface IPasswordService
+    {
+        void setPassword(Account player, string password);
+        PasswordVerificationResult VerifyPassword(Account player, string passowrd);
+    }
+
+    public class PasswordService : IPasswordService
+    {
+        private readonly ILiteDbService db;
+        private readonly PasswordHasher<Account> _hasher = new PasswordHasher<Account>();
+
+        public PasswordService(ILiteDbService _db)
+        {
+            db = _db;
+        }
+
+        public void setPassword(Account player, string password)
+        {
+            player.PasswordHash = _hasher.HashPassword(player, password);
+            db.Accounts.Update(player);
+        }
+
+        public PasswordVerificationResult VerifyPassword(Account player, string passowrd)
+        {
+            if (player.PasswordHash == null)
+            {
+                return PasswordVerificationResult.Failed;
+            }
+            return _hasher.VerifyHashedPassword(player, player.PasswordHash, passowrd);
+        }
+
+    }
+}