Add StateStoreViewModel and publisher extensions for convenienec.

RiotSwiftUI/Modules/Common/StateStore/StateStorePublisherExtensions.swift

@@ -0,0 +1,26 @@
+import Foundation
+import Combine
+
+@available(iOS 14.0, *)
+extension Publisher {
+    
+    func sinkDispatchTo<S, SA, IA>(_ store: StateStoreViewModel<S, SA, IA>) where SA == Output, Failure == Never {
+        return self
+            .subscribe(on: DispatchQueue.main)
+            .sink { [weak store] (output) in
+                guard let store = store else { return }
+                store.dispatch(action: output)
+            }
+            .store(in: &store.cancellables)
+    }
+    
+    
+    func dispatchTo<S, SA, IA>(_ store: StateStoreViewModel<S, SA, IA>)  -> Publishers.HandleEvents<Publishers.SubscribeOn<Self, DispatchQueue>> where SA == Output, Failure == Never {
+        return self
+            .subscribe(on: DispatchQueue.main)
+            .handleEvents(receiveOutput: { [weak store] action in
+                guard let store = store else { return }
+                store.dispatch(action: action)
+            })
+    }
+}