Add generated artifacts in Mac/ to .gitignore; update copyright (GH-29408) (GH-29409)

(cherry picked from commit 3167df16212e27f8aac1e5f39c0644a97b593406)

Co-authored-by: Ɓukasz Langa <lukasz@langa.pl>
diff --git a/.gitignore b/.gitignore
index a96be67..d0b6088 100644
--- a/.gitignore
+++ b/.gitignore
@@ -61,6 +61,15 @@
 !Lib/test/data/README
 /Makefile
 /Makefile.pre
+Mac/Makefile
+Mac/PythonLauncher/Info.plist
+Mac/PythonLauncher/Makefile
+Mac/PythonLauncher/Python Launcher
+Mac/PythonLauncher/Python Launcher.app/*
+Mac/Resources/app/Info.plist
+Mac/Resources/framework/Info.plist
+Mac/pythonw
+/*.framework/
 Misc/python.pc
 Misc/python-embed.pc
 Misc/python-config.sh