fix: add missing TROUBLESHOOTING_URL and COMPATIBILITY_URL constants

[lacymorrow]

Summary

• TROUBLESHOOTING_URL and COMPATIBILITY_URL were imported in menu.js but never defined in config.js, causing an uncaught Error: The url option is required exception on app start when openUrlMenuItem was called with undefined URLs.
• Added both constants to config.js pointing to the GitHub readme game-compatibility section and the community compatibility issue (>>> List of Games (that work/don't work) #47).

Test plan

• Run npm start — app should launch without the url option is required exception
• Open Help menu → verify "Troubleshooting Guide" and "Game Compatibility List" links open correct URLs

[gemini-code-assist]

Code Review

This pull request adds and exports two new configuration constants, TROUBLESHOOTING_URL and COMPATIBILITY_URL, pointing to game compatibility resources on GitHub. I have no feedback to provide.

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