added README for redirect-demo

demo/redirect-flow-example/src/components/LoadingIndicator.tsx

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+import "./styles.css";
+
+const LoadingSpinner = () => {
+  return (
+    <div className="lds-wrapper">
+      <div className="lds-container">
+        <div className="lds-ring">
+          <div />
+          <div />
+          <div />
+          <div />
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default LoadingSpinner;

demo/redirect-flow-example/src/components/styles.css

@@ -0,0 +1,54 @@
+.lds-wrapper {
+  position: absolute;
+  width: 100vw;
+  height: 100vh;
+  top: 0;
+  left: 0;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  background: rgba(0, 0, 0, 0.2);
+}
+
+.lds-container {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+.lds-ring {
+  display: inline-block;
+  position: relative;
+  width: 80px;
+  height: 80px;
+}
+.lds-ring div {
+  box-sizing: border-box;
+  display: block;
+  position: absolute;
+  width: 64px;
+  height: 64px;
+  margin: 8px;
+  border: 5px solid #0346ff;
+  border-radius: 50%;
+  animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
+  border-color: #0346ff transparent transparent transparent;
+}
+.lds-ring div:nth-child(1) {
+  animation-delay: -0.45s;
+}
+.lds-ring div:nth-child(2) {
+  animation-delay: -0.3s;
+}
+.lds-ring div:nth-child(3) {
+  animation-delay: -0.15s;
+}
+@keyframes lds-ring {
+  0% {
+    transform: rotate(0deg);
+  }
+  100% {
+    transform: rotate(360deg);
+  }
+}