Add VSCode launch config.

.vscode/launch.json

@@ -0,0 +1,24 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "ILSpy",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "${workspaceFolder}/ILSpy/bin/Debug/net10.0-windows/ILSpy.exe",
+            "args": ["--newinstance"],
+            "cwd": "${workspaceFolder}",
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach"
+        }
+    ]
+}

.vscode/settings.json

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+{
+    "dotnet-test-explorer.testProjectPath": "*.Tests/*Tests.csproj",
+    "files.exclude": {
+        "ILSpy-tests/**": true
+    },
+    "dotnet.defaultSolution": "ILSpy.sln",
+}

.vscode/tasks.json

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+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "dotnet",
+            "args": [
+                "build",
+                // Ask msbuild to generate full paths for file names.
+                "/property:GenerateFullPaths=true",
+                "/t:build",
+                // Do not generate summary otherwise it leads to duplicate errors in Problems panel
+                "/consoleloggerparameters:NoSummary",
+                "ILSpy/ILSpy.csproj"
+            ],
+            "group": "build",
+            "presentation": {
+                // Reveal the output only if unrecognized errors occur.
+                "reveal": "silent"
+            },
+            // Use the standard MS compiler pattern to detect errors, warnings and infos
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}