Add configuration for React Native extension

Also adds the React Native extension to the recommended list.

.vscode/extensions.json

@@ -1,5 +1,6 @@
 {
     "recommendations": [
-    	"gcazaciuc.vscode-flow-ide"
+        "gcazaciuc.vscode-flow-ide",
+        "vsmobile.vscode-react-native"
     ]
 }

.vscode/launch.json

@@ -0,0 +1,34 @@
+{
+    // 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": "Debug Android",
+            "program": "${workspaceRoot}/.vscode/launchReactNative.js",
+            "type": "reactnative",
+            "request": "launch",
+            "platform": "android",
+            "sourceMaps": true,
+            "outDir": "${workspaceRoot}/.vscode/.react"
+        },
+        {
+            "name": "Debug iOS",
+            "program": "${workspaceRoot}/.vscode/launchReactNative.js",
+            "type": "reactnative",
+            "request": "launch",
+            "platform": "ios",
+            "sourceMaps": true,
+            "outDir": "${workspaceRoot}/.vscode/.react"
+        },
+        {
+            "name": "Attach to packager",
+            "program": "${workspaceRoot}/.vscode/launchReactNative.js",
+            "type": "reactnative",
+            "request": "attach",
+            "sourceMaps": true,
+            "outDir": "${workspaceRoot}/.vscode/.react"
+        },
+    ]
+}