Insanely huge initial commit

Assets/Extensions/Feel/MMTools/Tools/MMExtensions/MMDictionaryExtensions.cs

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+using UnityEngine;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace MoreMountains.Tools
+{
+	/// <summary>
+	/// Dictionary extensions
+	/// </summary>
+	public static class MMDictionaryExtensions
+	{
+		/// <summary>
+		/// Finds a key (if there's one) that matches the value set in parameters
+		/// </summary>
+		/// <typeparam name="T"></typeparam>
+		/// <typeparam name="W"></typeparam>
+		/// <param name="dictionary"></param>
+		/// <param name="value"></param>
+		/// <returns></returns>
+		public static T KeyByValue<T, W>(this Dictionary<T, W> dictionary, T value)
+		{
+			T key = default;
+			foreach (KeyValuePair<T, W> pair in dictionary)
+			{
+				if (pair.Value.Equals(value))
+				{
+					key = pair.Key;
+					break;
+				}
+			}
+			return key;
+		}
+	}
+}