Split out the Flashii interaction code into a separate library.

SharpChatCommon/Configuration/Config.cs

@@ -0,0 +1,29 @@
+namespace SharpChat.Configuration {
+    public interface Config : IDisposable {
+        /// <summary>
+        /// Creates a proxy object that forces all names to start with the given prefix.
+        /// </summary>
+        Config ScopeTo(string prefix);
+
+        /// <summary>
+        /// Reads a raw (string) value from the config.
+        /// </summary>
+        string? ReadValue(string name, string? fallback = null);
+
+        /// <summary>
+        /// Reads and casts value from the config.
+        /// </summary>
+        /// <exception cref="ConfigTypeException">Type conversion failed.</exception>
+        T? ReadValue<T>(string name, T? fallback = default);
+
+        /// <summary>
+        /// Reads and casts a value from the config. Returns fallback when type conversion fails.
+        /// </summary>
+        T? SafeReadValue<T>(string name, T? fallback);
+
+        /// <summary>
+        /// Creates an object that caches the read value for a certain amount of time, avoiding disk reads for frequently used non-static values.
+        /// </summary>
+        CachedValue<T> ReadCached<T>(string name, T? fallback = default, TimeSpan? lifetime = null);
+    }
+}