Use Fluxor for state management

Start/Client/Store/State/RootState.cs

@@ -0,0 +1,59 @@
+using System.Collections.Immutable;
+using Fluxor;
+using Start.Shared;
+
+namespace Start.Client.Store.State {
+	[FeatureState]
+	public record RootState {
+		public ContainerListState ContainerListState { get; init; }
+		public CurrentContainerState CurrentContainerState { get; init; }
+
+		public RootState() {
+			this.ContainerListState = new ContainerListState();
+			this.CurrentContainerState = new CurrentContainerState();
+		}
+
+		public RootState(ContainerListState containerList, CurrentContainerState currentContainer) {
+			this.ContainerListState = containerList;
+			this.CurrentContainerState = currentContainer;
+		}
+	}
+
+	public record ContainerListState {
+		public ImmutableList<BookmarkContainerDto> Containers { get; init; }
+		public bool IsLoadingContainersList { get; init; }
+		public string? ErrorMessage { get; init; }
+
+		public ContainerListState() {
+			this.Containers = ImmutableList<BookmarkContainerDto>.Empty;
+			this.IsLoadingContainersList = false;
+			this.ErrorMessage = null;
+		}
+
+		public ContainerListState(ImmutableList<BookmarkContainerDto> containers,
+			bool isLoadingContainersList, string? errorMessage) {
+			this.Containers = containers;
+			this.IsLoadingContainersList = isLoadingContainersList;
+			this.ErrorMessage = errorMessage;
+		}
+	}
+
+	public record CurrentContainerState {
+		public BookmarkContainerDto? Container { get; init; }
+		public bool IsLoadingCurrentContainer { get; init; }
+		public string? ErrorMessage { get; init; }
+
+		public CurrentContainerState() {
+			this.Container = null;
+			this.IsLoadingCurrentContainer = false;
+			this.ErrorMessage = null;
+		}
+
+		public CurrentContainerState(BookmarkContainerDto? currentContainer,
+			bool isLoadingCurrentContainer, string? errorMessage) {
+			this.Container = currentContainer;
+			this.IsLoadingCurrentContainer = isLoadingCurrentContainer;
+			this.ErrorMessage = errorMessage;
+		}
+	}
+}