Revert "ci: Remove codesandbox (TanStack#6814)" (TanStack#6818)

This reverts commit 8450d9a.

Author: lachlancollins

.codesandbox/ci.json

@@ -0,0 +1,13 @@
+{
+  "installCommand": "install:csb",
+  "buildCommand": "build:all -- --exclude=integrations/**",
+  "sandboxes": [
+    "/examples/angular/basic",
+    "/examples/react/basic-typescript",
+    "/examples/solid/basic-typescript",
+    "/examples/svelte/basic",
+    "/examples/vue/basic"
+  ],
+  "packages": ["packages/**"],
+  "node": "18"
+}

package.json

@@ -10,6 +10,7 @@
   "scripts": {
     "clean": "pnpm --filter \"./packages/**\" run clean",
     "preinstall": "node -e \"if(process.env.CI == 'true') {console.log('Skipping preinstall...'); process.exit(1)}\" || npx -y only-allow pnpm",
+    "install:csb": "corepack enable && pnpm install --frozen-lockfile",
     "test": "pnpm run test:ci",
     "test:pr": "nx affected --targets=test:eslint,test:lib,test:types,test:build,build",
     "test:ci": "nx run-many --targets=test:format,test:sherif,test:eslint,test:lib,test:types,test:build,build",