[PR] Improve parsing speed by Avoid clone in parse_identifier [datafusion-sqlparser-rs]

[via GitHub]

alamb opened a new pull request, #1624:
URL: https://github.com/apache/datafusion-sqlparser-rs/pull/1624

   I made a flamegraph of the sqlparser_bench and found a few unecessary clones
   
   
![flamegraph](https://github.com/user-attachments/assets/070959e1-6f3a-4572-8815-dd594d1b11c3)
   
   This PR avoids a clone (string copy) in parse_identifier. 
   
   I don't think this will make things much faster (yet), but it makes clear 
where the cloning is happening.
   I hope to optimize the speed of parsing identifiers more as a follow on PR. 


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