Add ephemeral and to gitignore (#2541)

.gitignore

diff --git a/.gitignore b/.gitignore
index 36cd71b..bfb8a70 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,9 +16,11 @@
 Pods/
 .symlinks/
 **/Flutter/App.framework/
+**/Flutter/ephemeral/
 **/Flutter/Flutter.framework/
 **/Flutter/Generated.xcconfig
 **/Flutter/flutter_assets/
+
 ServiceDefinitions.json
 xcuserdata/
 **/DerivedData/
@@ -35,6 +37,7 @@
 GeneratedPluginRegistrant.h
 GeneratedPluginRegistrant.m
 GeneratedPluginRegistrant.java
+GeneratedPluginRegistrant.swift
 build/
 .flutter-plugins