feat(hooks): add useConnection

packages/svelte/src/lib/hooks/useConnection.ts

@@ -0,0 +1,10 @@
+import type { Readable } from 'svelte/store';
+
+import { useStore } from '$lib/store';
+import type { ConnectionProps } from '$lib/store/derived-connection-props';
+
+export function useConnection(): Readable<ConnectionProps> {
+  const { connection } = useStore();
+
+  return connection;
+}