feat(node): Vendor in @fastify/otel (#16328)

Resolves: #16309 

I tried to make as few modifications as possible for easier updates from
the original implementation in the future.

- Converted `require`s and `module.export`s to `import`s and `exports`
- Created a local `eslint` configuration
- Hard-coded `name` and `version` to the vendored version instead of
reading from `package.json`

Author: onurtemizkan

packages/node/package.json

@@ -65,7 +65,6 @@
     "access": "public"
   },
   "dependencies": {
-    "@fastify/otel": "https://codeload.github.com/getsentry/fastify-otel/tar.gz/ae3088d65e286bdc94ac5d722573537d6a6671bb",
     "@opentelemetry/api": "^1.9.0",
     "@opentelemetry/context-async-hooks": "^1.30.1",
     "@opentelemetry/core": "^1.30.1",
@@ -98,7 +97,8 @@
     "@prisma/instrumentation": "6.7.0",
     "@sentry/core": "9.20.0",
     "@sentry/opentelemetry": "9.20.0",
-    "import-in-the-middle": "^1.13.1"
+    "import-in-the-middle": "^1.13.1",
+    "minimatch": "^9.0.0"
   },
   "devDependencies": {
     "@types/node": "^18.19.1"

packages/node/src/integrations/tracing/fastify/fastify-otel/.eslintrc.js

@@ -0,0 +1,9 @@
+module.exports = {
+  env: {
+    node: true,
+  },
+  parserOptions: {
+    sourceType: 'module',
+    ecmaVersion: 2020,
+  },
+};

packages/node/src/integrations/tracing/fastify/fastify-otel/index.d.ts

@@ -0,0 +1,29 @@
+/* eslint-disable @typescript-eslint/explicit-member-accessibility */
+/// <reference types="node" />
+
+import type { InstrumentationNodeModuleDefinition } from '@opentelemetry/instrumentation';
+import { InstrumentationBase } from '@opentelemetry/instrumentation';
+import type { FastifyPluginCallback } from 'fastify';
+import type { FastifyOtelInstrumentationOpts, FastifyOtelOptions, FastifyOtelRequestContext } from './types';
+
+declare module 'fastify' {
+  interface FastifyRequest {
+    opentelemetry(): FastifyOtelRequestContext;
+  }
+}
+
+declare class FastifyOtelInstrumentation<
+  Config extends FastifyOtelInstrumentationOpts = FastifyOtelInstrumentationOpts,
+> extends InstrumentationBase<Config> {
+  servername: string;
+  constructor(config?: FastifyOtelInstrumentationOpts);
+  init(): InstrumentationNodeModuleDefinition[];
+  plugin(): FastifyPluginCallback<FastifyOtelOptions>;
+}
+
+declare namespace exported {
+  export type { FastifyOtelInstrumentationOpts };
+  export { FastifyOtelInstrumentation };
+}
+
+export = exported;