Given a list of Contact records, insert them using Database.insert with allOrNone=false. Return a Map with two keys: "success" containing the count of successfully inserted records, and "failed" containing the count of failed records.

Examples:

Input: contacts = [Contact(LastName='Smith'), Contact(LastName='Jones')] Output: {'success': 2, 'failed': 0} Explanation: Both contacts inserted successfully Input: contacts = [] Output: {'success': 0, 'failed': 0} Explanation: Empty list results in zero successful and zero failed insertions
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