Create Dart snippets and reference them

Co-Authored-By: ok300 <106775972+ok300@users.noreply.github.com>

snippets/dart_snippets/lib/connecting_lsp.dart

@@ -0,0 +1,17 @@
+import 'package:breez_sdk/breez_sdk.dart';
+import 'package:breez_sdk/bridge_generated.dart';
+
+Future<void> getLspInfo() async {
+  // ANCHOR: get-lsp-info
+  String? lspId = await BreezSDK().lspId();
+  LspInformation? lspInfo = await BreezSDK().lspInfo();
+  print(lspId);
+  print(lspInfo);
+  // ANCHOR_END: get-lsp-info
+}
+
+Future<void> connectLsp(String lspId) async {
+  // ANCHOR: connect-lsp
+  return await BreezSDK().connectLSP(lspId);
+  // ANCHOR_END: connect-lsp
+}