pw_env_setup: initial PyOxidizer config

Create initial PyOxidizer config file.

Change-Id: Ie741defc01d80118ff1d69ef36bf9271c79af07c
Bug: 67, 68
diff --git a/.gitignore b/.gitignore
index dd46bd1..573d338 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,9 @@
 .mypy_cache/
 __pycache__/
 
+# PyOxidizer
+pw_env_setup/py/oxidizer/build
+
 # Mac
 .DS_Store