update planet-to-arcgis notebook (#377)

* update planet-to-arcgis notebook

* clear outputs and client id

* Update workflow for publishing PlanetScope imagery to ArcGIS Online

Author: matthew-ballard

.gitignore

@@ -96,4 +96,6 @@ gdalwmscache
 # IDE environments
 .idea/*
 
-jupyter-notebooks/workflows/planet_sandbox_data/forest-carbon-dilligence/fcd_statistics.csv
+# local download folders
+**/**/planet_downloads/
+jupyter-notebooks/workflows/planet_sandbox_data/forest-carbon-dilligence/fcd_statistics.csv