New Breadcrumb user control

New Breadcrumb service
WIP icons and back button behavior

ModernKeePass.Application/Common/Services/BreadcrumbService.cs

@@ -0,0 +1,37 @@
+using System.Collections.Generic;
+using ModernKeePass.Application.Common.Interfaces;
+using ModernKeePass.Application.Common.Models;
+
+namespace ModernKeePass.Application.Common.Services
+{
+    public class BreadcrumbService: IBreadcrumbService
+    {
+        private readonly Stack<BreadcrumbItem> _breadcrumb;
+
+        public BreadcrumbService()
+        {
+            _breadcrumb = new Stack<BreadcrumbItem>();
+        }
+
+        public void Push(BreadcrumbItem item)
+        {
+            _breadcrumb.Push(item);
+        }
+
+        public BreadcrumbItem Pop(int count = 1)
+        {
+            if (_breadcrumb.Count == 0) return null;
+            for (var i = 1; i < count; i++)
+            {
+                _breadcrumb.Pop();
+            }
+
+            return _breadcrumb.Pop();
+        }
+
+        public IEnumerable<BreadcrumbItem> GetItems()
+        {
+            return _breadcrumb;
+        }
+    }
+}