v1.3.0: New website and leaderboard

New website and leaderboard

New

• Website: https://thatlmg.github.io/aim-trainer/ with a playable bot demo and one-click download.
• New leaderboard: make a free account (username, email, password) and submit runs with a clip. Mods verify them.
• The Leaderboard buttons in the app now open the new site.