Split out the Flashii interaction code into a separate library.

SharpChatCommon/Configuration/CachedValue.cs

@@ -0,0 +1,34 @@
+namespace SharpChat.Configuration {
+    public class CachedValue<T>(Config config, string name, TimeSpan lifetime, T? fallback) {
+        private Config Config { get; } = config ?? throw new ArgumentNullException(nameof(config));
+        private string Name { get; } = name ?? throw new ArgumentNullException(nameof(name));
+        private object ConfigAccess { get; } = new();
+
+        private object? CurrentValue { get; set; } = default(T);
+        private DateTimeOffset LastRead { get; set; }
+
+        public T? Value {
+            get {
+                lock(ConfigAccess) { // this lock doesn't really make sense since it doesn't affect other config calls
+                    DateTimeOffset now = DateTimeOffset.Now;
+                    if((now - LastRead) >= lifetime) {
+                        LastRead = now;
+                        CurrentValue = Config.ReadValue(Name, fallback);
+                        Logger.Debug($"Read {Name} ({CurrentValue})");
+                    }
+                }
+                return (T?)CurrentValue;
+            }
+        }
+
+        public static implicit operator T?(CachedValue<T?> val) => val.Value;
+
+        public void Refresh() {
+            LastRead = DateTimeOffset.MinValue;
+        }
+
+        public override string ToString() {
+            return Value?.ToString() ?? string.Empty;
+        }
+    }
+}