add WASM blazor-like thing

.vscode/launch.json

@@ -0,0 +1,35 @@
+{
+  // Debug configs for the gowasm example. cwd is the example dir because the
+  // dev server resolves ./wwwroot, ./app, ./wasm and the watched engine dir
+  // relative to it.
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "gowasm: dev server",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/go/cmd/examples/go-wasm-web/server",
+      "cwd": "${workspaceFolder}/go/cmd/examples/go-wasm-web",
+      "args": ["-addr", ":8085"]
+    },
+    {
+      "name": "gowasm: dev server (no watch)",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/go/cmd/examples/go-wasm-web/server",
+      "cwd": "${workspaceFolder}/go/cmd/examples/go-wasm-web",
+      "args": ["-watch=false"]
+    },
+    {
+      "name": "gowasm: codegen (gowasmgen)",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/go/cmd/gowasmgen",
+      "cwd": "${workspaceFolder}/go/cmd/examples/go-wasm-web",
+      "args": ["./app"]
+    }
+  ]
+}