SNOW-1677888, SNOW-1677890: Add support for DataFrame.tz_convert and Series.tz_convert

[sfc-gh-helmeleegy]

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

   Fixes SNOW-1677888, SNOW-1677890

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.

   Add support for DataFrame.tz_convert and Series.tz_convert.

[sfc-gh-nkrishna]

Edit based on Slack discussion: There are multiple subtle differences. For example, input to tz_localize needs to be tz-naive, while input to tz_convert needs to be tz-aware. Let's keep as separate PRs for now.

@sfc-gh-helmeleegy IMO the code in this PR can be added to the tz_localize one as well: #2398. I think you can even test both tz_localize/tz_convert by parametrizing on the function in the same test file. Even though the PR line diff it bloated, it will mostly be docstrings/signature and since most of the code is in both places, you will have to rebase anyways.

[sfc-gh-jkew]

Ok. Looks good.

[sfc-gh-nkrishna]

LGTM!