Agent: Use updated agent protocols (#44)

Update to use the latest changes for the agent protocols from
sourcegraph/cody#5211

This let agent knows when we have a workspace added or removed.

Also updated to use `View = WebviewView.Single,` for webview to always
run chats in sidebar view

```

22:05:32.767: [ProcessId:38884] [ThreadId:5] Debug [AgentJsonMessageFormatter.OnSerializationComplete] Sending to agent: {"jsonrpc":"2.0","id":3,"method":"workspaceFolder/didChange","params":[{"uris":["file:///C:/Users/BeatrixW/source/repos/TestingApp"]}]}
```

src/Cody.AgentTester/Program.cs

@@ -66,6 +66,7 @@ private static async Task Initialize()
                     Webview = "native",
                     WebviewNativeConfig = new WebviewCapabilities
                     {
+                        View = WebviewView.Single,
                         CspSource = "'self' https://cody.vs",
                         WebviewBundleServingPrefix = "https://cody.vs",
                     },

src/Cody.Core/Agent/IAgentService.cs

@@ -1,4 +1,6 @@
-using Cody.Core.Agent.Protocol;
+using Cody.Core.Agent.Protocol;
+using System.Collections.Generic;
+using System;
 using System.Threading.Tasks;
 
 namespace Cody.Core.Agent
@@ -52,6 +54,6 @@ public interface IAgentService
         Task<ChatPanelInfo> NewEditorChat();
 
         [AgentMethod("workspaceFolder/didChange")]
-        Task WorkspaceFolderDidChange(CodyFilePath path);
+        Task WorkspaceFolderDidChange(WorkspaceFolderDidChangeEvent uris);
     }
 }

src/Cody.Core/Agent/InitializeCallback.cs

@@ -53,6 +53,7 @@ public async Task Initialize(IAgentService client)
                     Webview = "native",
                     WebviewNativeConfig = new WebviewCapabilities
                     {
+                        View = WebviewView.Single,
                         CspSource = "'self' https://cody.vs",
                         WebviewBundleServingPrefix = "https://cody.vs",
                     },

src/Cody.Core/Agent/Protocol/WebviewCapabilities.cs

@@ -1,14 +1,15 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
 namespace Cody.Core.Agent.Protocol
 {
     public class WebviewCapabilities
     {
         public string CspSource { get; set; }
         public string WebviewBundleServingPrefix { get; set; }
+        public WebviewView View { get; set; }
+    }
+
+    public enum WebviewView
+    {
+        Single,
+        Multiple
     }
 }

src/Cody.Core/Agent/Protocol/WorkspaceFolderDidChangeEvent.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Cody.Core.Agent.Protocol
+{
+    public class WorkspaceFolderDidChangeEvent
+    {
+        public List<string> Uris { get; set; }
+
+        public WorkspaceFolderDidChangeEvent()
+        {
+            Uris = new List<string>();
+        }
+    }
+
+}

src/Cody.Core/Cody.Core.csproj

@@ -63,6 +63,7 @@
     <Compile Include="Agent\NotificationHandlers.cs" />
     <Compile Include="Agent\Protocol\AuthStatus.cs" />
     <Compile Include="Agent\Protocol\ChatPanelInfo.cs" />
+    <Compile Include="Agent\Protocol\WorkspaceFolderDidChangeEvent.cs" />
     <Compile Include="Agent\Protocol\TextDocumentShowParamsOptions.cs" />
     <Compile Include="Agent\Protocol\TextDocumentShowParams.cs" />
     <Compile Include="Agent\Protocol\CodyFilePath.cs" />