jpgwire: Export socket adapter (#440)

Author: simolus3

.changeset/silly-actors-retire.md

@@ -0,0 +1,5 @@
+---
+'@powersync/service-jpgwire': patch
+---
+
+Export SocketAdapter class, the async socket wrapper for pgwire.

packages/jpgwire/src/index.ts

@@ -3,4 +3,5 @@ export * from './certs.js';
 export * from './util.js';
 export * from './metrics.js';
 export * from './pgwire_types.js';
+export * from './socket_adapter.js';
 export * from './structure_parser.js';