feat(nuxt): Add warning when Netlify or Vercel build is discovered (#13868)

Depending on this (because of the link in the warning):
getsentry/sentry-docs#11486

Author: s1gr1d

packages/nuxt/src/module.ts

@@ -88,6 +88,26 @@ export default defineNuxtModule<ModuleOptions>({
           });
         }
 
+        consoleSandbox(() => {
+          const serverDir = nitro.options.output.serverDir;
+
+          // Netlify env: https://docs.netlify.com/configure-builds/environment-variables/#build-metadata
+          if (serverDir.includes('.netlify') || !!process.env.NETLIFY) {
+            // eslint-disable-next-line no-console
+            console.warn(
+              '[Sentry] Warning: The Sentry SDK detected a Netlify build. Server-side support for the Sentry Nuxt SDK on Netlify is currently unreliable due to technical limitations of serverless functions. Traces are not collected, and errors may occasionally not be reported. For more information on setting up Sentry on the Nuxt server-side, please refer to the documentation: https://docs.sentry.io/platforms/javascript/guides/nuxt/install/',
+            );
+          }
+
+          // Vercel env: https://vercel.com/docs/projects/environment-variables/system-environment-variables#VERCEL
+          if (serverDir.includes('.vercel') || !!process.env.VERCEL) {
+            // eslint-disable-next-line no-console
+            console.warn(
+              '[Sentry] Warning: The Sentry SDK detected a Vercel build. The Sentry Nuxt SDK currently does not support tracing on Vercel. For more information on setting up Sentry on the Nuxt server-side, please refer to the documentation: https://docs.sentry.io/platforms/javascript/guides/nuxt/install/',
+            );
+          }
+        });
+
         if (moduleOptions.autoInjectServerSentry !== 'experimental_dynamic-import') {
           addServerConfigToBuild(moduleOptions, nuxt, nitro, serverConfigFile);