[Feature Request]: Add timeout parameter to repair_json #203

Describe the solution you'd like

Thanks for maintaining this project!

I’d like to request a simple feature: add an optional timeout parameter to the repair_json function.

In some cases, when the input JSON string is badly malformed, the repair process may take too long. A timeout option would allow users to stop the repair process after a specified amount of time. The feature is friendly for Python users to stop a repair task that may take a very long time.

Example usage:

from json_repair import repair_json

result = repair_json(bad_json, timeout=5)

Expected behavior:

• timeout is optional.
• If not provided, the current behavior stays unchanged.
• If the timeout is reached, the function should raise an exception or return a clear error.

Thank you so much!

Context

I ran into a problematic case with a malformed JSON response that contained an unclosed string followed by many comma-separated fragments. For this input shape, the runtime appeared to grow non-linearly as the input size increased:

~5.9 KB   -> 0.88s
~17.6 KB  -> 8.34s
~35 KB    -> exceeded a 20s timeout

In production or user-facing applications, this kind of input can cause a request to hang for too long. An optional timeout parameter would let callers put an upper bound on repair time, fail gracefully, and avoid blocking the application when malformed input triggers very slow repair behavior.