ui updates

add: p-image-2-ideogram-benchmarking-results

chore: replace local dependency with 'gradio-leaderboard' in requirements.txt

chore: add build command to README and update requirements.txt for clarity

chore: update pyproject.toml to define build system and package inclusion, modify requirements.txt for dashboard dependency

chore: add requirements.txt to specify 'gradio-leaderboard' dependency