add shared controllers and view to ios core

src/iOS.Core/Views/SliderTableViewCell.cs

@@ -0,0 +1,56 @@
+using System;
+using UIKit;
+
+namespace Bit.iOS.Core.Views
+{
+    public class SliderTableViewCell : UITableViewCell
+    {
+        private string _detailRightSpace = "\t";
+        private int _value;
+
+        public SliderTableViewCell(string labelName, int value, int min, int max)
+            : base(UITableViewCellStyle.Value1, nameof(SwitchTableViewCell))
+        {
+            TextLabel.Text = labelName;
+            DetailTextLabel.TextColor = new UIColor(red: 0.47f, green: 0.47f, blue: 0.47f, alpha: 1.0f);
+
+            Slider = new UISlider
+            {
+                MinValue = min,
+                MaxValue = max,
+                TintColor = new UIColor(red: 0.24f, green: 0.55f, blue: 0.74f, alpha: 1.0f),
+                Frame = new CoreGraphics.CGRect(0, 0, 180, 30)
+            };
+            Slider.ValueChanged += Slider_ValueChanged;
+            Value = value;
+
+            AccessoryView = Slider;
+        }
+
+        private void Slider_ValueChanged(object sender, EventArgs e)
+        {
+            var newValue = Convert.ToInt32(Math.Round(Slider.Value, 0));
+            bool valueChanged = newValue != Value;
+
+            Value = newValue;
+
+            if(valueChanged)
+            {
+                ValueChanged?.Invoke(this, null);
+            }
+        }
+
+        public UISlider Slider { get; set; }
+        public int Value
+        {
+            get { return _value; }
+            set
+            {
+                _value = value;
+                Slider.Value = value;
+                DetailTextLabel.Text = string.Concat(value.ToString(), _detailRightSpace);
+            }
+        }
+        public event EventHandler ValueChanged;
+    }
+}