Update tools descriptions and @modelcontextprotocol/sdk

• Updated tools descriptions to include full league names
• Updated @modelcontextprotocol/sdk to 1.15.1

Added Desktop Extensions file

Added Anthropic DXT file for easy installation.

Added schedule_generator prompt

Added schedule_generator prompt

Added LibreChat usage, fix get_teams description

-Added LibreChat usage to readme
-Fixed the description of get_teams tool

Fix README and added shebang to index

-Fix typo in README
-Added shebang to index.ts

Initial Release

Initial Release of balldontlie-mcp with the following tools

• get_teams
• get_players
• get_games
• get_game