Add tilegym homepage to setup.py

[arjkesh]

Description

Add homepage link, fix version str

CI Configuration

config:
  build: true
  # valid options are "ops" and "benchmark"
  test: []

Checklist

• Code formatted and imports sorted via repo specifications (./format.sh)
• Documentation updated (if needed)
• CI configuration reviewed

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[arjkesh]

/ok to test 2d4754f