chore(repo): ignore .cursor config files (#30215)

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## Current Behavior
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## Expected Behavior
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Make sure Cursor specific files are not git indexed as MCP servers might
be custom. If we ever continue adding cursorfiles etc that are shared
for the repo we can have a more fine-grained ignoring.


![image](https://github.com/user-attachments/assets/30343b8e-48bc-4d12-b71b-f7c911f7808d)


## Related Issue(s)
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Fixes #

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