Add OpenTelemetry Node SDK docs

Author: AbhiPrasad

src/platform-includes/performance/opentelemetry-install/node.mdx

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+```bash {tabTitle:npm}
+npm install @sentry/node @sentry/opentelemetry-node
+```
+
+```bash {tabTitle:yarn}
+npm install @sentry/node @sentry/opentelemetry-node
+```
+
+<Note>
+
+Note that @sentry/opentelemetry-node depends on the following peer dependencies:
+
+- @opentelemetry/api version 1.0.0 or greater
+- @opentelemetry/sdk-trace-base version 1.0.0 or greater, or a package that implements that, like @opentelemetry/sdk-node.
+
+</Note>

src/platform-includes/performance/opentelemetry-setup/node.mdx

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+You need to register the SentrySpanProcessor and SentryPropagator with your OpenTelemetry installation:
+
+```js
+import _ as Sentry from '@sentry/node';
+import _ as otelApi from '@opentelemetry/api';
+import { SentrySpanProcessor } from '@sentry/opentelemetry-node';
+
+// Make sure to call `Sentry.init` BEFORE initializing the OpenTelemetry SDK
+Sentry.init({
+  dsn: '___PUBLIC_DSN___',
+  // ...
+});
+
+const sdk = new opentelemetry.NodeSDK({
+  // Existing config
+  traceExporter: new OTLPTraceExporter(),
+  instrumentations: [getNodeAutoInstrumentations()],
+
+  // Sentry config
+  spanProcessor: new SentrySpanProcessor(),
+});
+
+otelApi.propagation.setGlobalPropagator(new SentryPropagator());
+```

src/platforms/common/performance/instrumentation/opentelemetry.mdx

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+---
+title: OpenTelemetry Support
+sidebar_order: 20
+supported:
+  - node
+notSupported:
+  - javascript
+  - python
+  - dart
+  - flutter
+  - react-native
+  - java
+  - java.spring-boot
+  - android
+  - apple
+  - dotnet
+  - javascript.cordova
+  - javascript.electron
+  - go
+  - ruby
+  - unity
+  - rust
+  - native
+  - php
+  - native.breakpad
+  - native.crashpad
+  - native.minidumps
+  - unreal
+  - native.wasm
+description: "Using OpenTelemetry with Sentry Performance."
+---
+
+<Alert level="warning" title="Note">
+
+OpenTelemetry support for Sentry SDKs are in an alpha state. Features in alpha are still in-progress and may have bugs. We recognize the irony.
+
+</Alert>
+
+You can configure your [OpenTelemetry SDK](https://opentelemetry.io/) to send traces and spans to Sentry.
+
+## Installation
+
+<PlatformContent includePath="performance/opentelemetry-install" />
+
+## Usage
+
+<PlatformContent includePath="performance/opentelemetry-install" />