feat: Expose Integrations to use in other sdks (#1393)

Author: HazAT

packages/browser/src/index.ts

@@ -24,3 +24,6 @@ export { Hub, Scope } from '@sentry/hub';
 export { BrowserBackend, BrowserOptions } from './backend';
 export { BrowserClient } from './client';
 export { init, getCurrentClient } from './sdk';
+
+import * as Integrations from './integrations';
+export { Integrations };

packages/node/src/index.ts

@@ -25,3 +25,6 @@ export { Hub } from './hub';
 export { NodeBackend, NodeOptions } from './backend';
 export { NodeClient } from './client';
 export { init, getCurrentClient } from './sdk';
+
+import * as Integrations from './integrations';
+export { Integrations };