SNOW-640230-add SnowflakeFile interface and tests

[sfc-gh-zliu]

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

   SNOW-640230

2. Fill out the following pre-review checklist:

   • [x] I am adding a new automated test(s) to verify correctness of my new code
   • [ ] I am adding new logging messages
   • [ ] I am adding new credentials
   • [ ] I am adding a new dependency

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

   We create a SnowflakeFile interface for user to use during development of Python UDF locally.

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[sfc-gh-zliu]

recheck

[sfc-gh-zliu]

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

[sfc-gh-zliu]

@sfc-gh-yixie @sfc-gh-mabrennan thank you for the comments, I fixed some mistakes and also delete all the words about local file access since we don't support it now