SNOW-1665697: add open_new_result in document API

[sfc-gh-zhan]

Description
add open_new_result in document API, https://docs.snowflake.com/en/developer-guide/snowpark/reference/python/1.8.0/api/snowflake.snowpark.files.SnowflakeFile.open

Testing
add unit test

1. Which Jira issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-1665697

2. Fill out the following pre-review checklist:

   • I am adding a new automated test(s) to verify correctness of my new code
     • If this test skips Local Testing mode, I'm requesting review from @snowflakedb/local-testing
   • I am adding new logging messages
   • I am adding a new telemetry message
   • I am adding new credentials
   • I am adding a new dependency
   • If this is a new feature/behavior, I'm adding the Local Testing parity changes.

3. Please describe how your code solves the related issue.

   Please write a short description of how your code change solves the related issue.

[github-actions]

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[sfc-gh-zhan]

I have read the CLA Document and I hereby sign the CLA

[sfc-gh-zhan]

Hi @sfc-gh-aalam looks like I'm not authorized to merge, could you help to merge it? thanks!