Added TTS Filter cache.

Requests/UpdateTTSFilter.cs

@@ -0,0 +1,45 @@
+using HermesSocketLibrary.Requests.Messages;
+using HermesSocketServer.Services;
+using ILogger = Serilog.ILogger;
+
+namespace HermesSocketServer.Requests
+{
+    public class UpdateTTSFilter : IRequest
+    {
+        public string Name => "update_tts_filter";
+        public string[] RequiredKeys => ["id", "search", "replace"];
+        private ChannelManager _channels;
+        private ILogger _logger;
+
+        public UpdateTTSFilter(ChannelManager channels, ILogger logger)
+        {
+            _channels = channels;
+            _logger = logger;
+        }
+
+        public async Task<RequestResult> Grant(string sender, IDictionary<string, object>? data)
+        {
+            var id = data["id"].ToString()!;
+            string search = data["search"].ToString()!;
+            string replace = data["replace"].ToString()!;
+
+            var filter = new TTSWordFilter()
+            {
+                Id = id,
+                UserId = sender,
+                Search = search,
+                Replace = replace,
+            };
+
+            var channel = _channels.Get(sender);
+            bool result = channel.Filters.Set(id, filter);
+
+            if (result)
+            {
+                _logger.Information($"Updated filter to channel [filter id: {id}][search: {search}][replace: {replace}][channel: {sender}]");
+                return RequestResult.Successful(filter);
+            }
+            return RequestResult.Failed("Something went wrong when updating the cache.");
+        }
+    }
+}