docs: add Admin API samples for property stream management methods

[ikuleshov]

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Fixes #<issue_number_goes_here> 🦕

[snippet-bot]

Here is the summary of changes.

You are about to add 16 region tags.

• samples/properties_android_app_data_streams_delete.py:23, tag analyticsadmin_properties_android_app_data_streams_delete
• samples/properties_android_app_data_streams_get.py:23, tag analyticsadmin_properties_android_app_data_streams_get
• samples/properties_android_app_data_streams_list.py:23, tag analyticsadmin_properties_android_app_data_streams_list
• samples/properties_android_app_data_streams_update.py:23, tag analyticsadmin_properties_android_app_data_streams_update
• samples/properties_ios_app_data_streams_delete.py:23, tag analyticsadmin_properties_ios_app_data_streams_delete
• samples/properties_ios_app_data_streams_get.py:23, tag analyticsadmin_properties_ios_app_data_streams_get
• samples/properties_ios_app_data_streams_list.py:23, tag analyticsadmin_properties_ios_app_data_streams_list
• samples/properties_ios_app_data_streams_update.py:23, tag analyticsadmin_properties_ios_app_data_streams_update
• samples/properties_web_data_streams_create.py:23, tag analyticsadmin_properties_web_data_streams_create
• samples/properties_web_data_streams_delete.py:23, tag analyticsadmin_properties_web_data_streams_delete
• samples/properties_web_data_streams_get.py:23, tag analyticsadmin_properties_web_data_streams_get
• samples/properties_web_data_streams_get_enhanced_measurement_settings.py:23, tag analyticsadmin_properties_web_data_streams_get_enhanced_measurement_settings
• samples/properties_web_data_streams_get_global_site_tag.py:23, tag analyticsadmin_properties_web_data_streams_get_global_site_tag
• samples/properties_web_data_streams_list.py:23, tag analyticsadmin_properties_web_data_streams_list
• samples/properties_web_data_streams_update.py:23, tag analyticsadmin_properties_web_data_streams_update
• samples/properties_web_data_streams_update_enhanced_measurement_settings.py:23, tag analyticsadmin_properties_web_data_streams_update_enhanced_measurement_settings

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[ikuleshov]

Region tag product prefix check is failing due to the product set as non-public in https://devrel.corp.google.com/admin/products/401. This is something that we are currently working on, but I believe the region prefixes are fine.