Expand support for extra strategies about abstractions HOT 1 CLOSED

#region Strategies

        /// <summary>
        /// The strategies this container uses.
        /// </summary>
        /// <value>The <see cref="IStagedStrategyChain{TStrategyType,TStageEnum}"/> that the container uses to build objects.</value>
        public abstract IStagedStrategyChain<IBuilderStrategy, UnityBuildStage> Strategies { get; }

        /// <summary>
        /// The strategies this container uses to construct build plans.
        /// </summary>
        /// <value>The <see cref="IStagedStrategyChain{TStrategyType,TStageEnum}"/> that this container uses when creating
        /// build plans.</value>
        public abstract IStagedStrategyChain<IBuilderStrategy, BuilderStage> BuildPlanStrategies { get; }

        #endregion