Added hopframe backend

SpotiParty.Web/Services/ClientSideStorage.cs

@@ -0,0 +1,19 @@
+namespace SpotiParty.Web.Services;
+
+public class ClientSideStorage(IHttpContextAccessor accessor) {
+
+    private const string AuthCookieName = "RefreshToken";
+
+    public void SaveUserToken(string token) {
+        accessor.HttpContext?.Response.Cookies.Append(AuthCookieName, token);
+    }
+
+    public string? GetUserToken() {
+        return accessor.HttpContext?.Request.Cookies[AuthCookieName];
+    }
+
+    public void DeleteUserToken() {
+        accessor.HttpContext?.Response.Cookies.Delete(AuthCookieName);
+    }
+    
+}