[KYUUBI #5686][FOLLOWUP] Rename pyhive to python

[pan3793]

🔍 Description

This is the follow-up of #5686, renaming ./pyhive to ./python, and also adding **/python/* to RAT exclusion list temporarily.

"PyHive" may not be a suitable name after being part of Apache Kyuubi, let's use a generic dir name python, and discuss the official name later(we probably keep the code at ./python eventually).

Types of changes 🔖

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Test Plan 🧪

Recover RAT checked.

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Checklist 📝

• This patch was not authored or co-authored using Generative Tooling

Be nice. Be informative.

[pan3793]

cc @yaooqinn @bkyryliuk @cfmcgrady @cxzl25 @bowenliang123

[cxzl25]

Later LGTM