refactor(di): migrate Integrations + IPC layer to ILogger<T> (DI-4 Slice B)

Seven services across Integrations/, Ipc/ and GameFunctions/ shift
from Plugin.LogProxy to Microsoft.Extensions.Logging.ILogger<T>.

Files with live LogProxy sites (10 in total):
- Ipc/ExtraChat (1)
- GameFunctions/Chat (6)
- GameFunctions/GameFunctions (2)
- GameFunctions/KeybindManager (1)

Foundation-touch files (no current sites, ctor takes ILogger<T> as
seed for the v1.5.7-11 Plugin-Integrations wave):
- Integrations/HonorificService (also drops the local IPluginLog
  _log field in favour of ILogger<HonorificService> _logger; the
  three _log.* calls there are migrated as a bonus since the field
  had to change anyway)
- IpcManager
- Ipc/TypingIpc

GameFunctions takes ILoggerFactory as an extra ctor arg so it can
hand a typed logger to its nested Chat and KeybindManager (same
pattern MessageStore + MessageEnumerator use in Slice A).

PluginHostFactory factory lambdas updated for all five Slice B
services that need extra resolves.

Plan drift D8: GameFunctions.TryOpenAdventurerPlate is an internal
static method whose only Warning call cannot reach the instance
_logger. The one site stays on Plugin.LogProxy with an inline note;
promoting it to instance + PayloadHandler.cs:814 call-site update is
a v1.5.1+ cleanup, out of DI-4 Slice B scope.

HellionChat/IpcManager.cs

@@ -1,11 +1,14 @@
 using Dalamud.Game.Text.SeStringHandling;
 using Dalamud.Game.Text.SeStringHandling.Payloads;
 using Dalamud.Plugin.Ipc;
+using Microsoft.Extensions.Logging;
 
 namespace HellionChat;
 
 internal sealed class IpcManager : IDisposable
 {
+    private readonly ILogger<IpcManager> _logger;
+
     private ICallGateProvider<string> RegisterGate { get; }
     private ICallGateProvider<string, object?> UnregisterGate { get; }
     private ICallGateProvider<object?> AvailableGate { get; }
@@ -41,8 +44,9 @@ internal sealed class IpcManager : IDisposable
 
     internal List<string> Registered { get; } = [];
 
-    public IpcManager()
+    public IpcManager(ILogger<IpcManager> logger)
     {
+        _logger = logger;
         RegisterGate = Plugin.Interface.GetIpcProvider<string>("HellionChat.Register");
         RegisterGate.RegisterFunc(Register);