Added rebase-needed bot

[jorgecarleitao]

I requested infra to take a look at the bot and they've whitelisted it. We had this before.

[codecov-commenter]

Codecov Report

Merging #13 (19f8636) into master (5b3298a) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head 19f8636 differs from pull request most recent head f62c2e1. Consider uploading reports for the commit f62c2e1 to get more accurate results

@@           Coverage Diff           @@
##           master      #13   +/-   ##
=======================================
  Coverage   82.47%   82.47%           
=======================================
  Files         162      162           
  Lines       43414    43414           
=======================================
+ Hits        35805    35806    +1     
+ Misses       7609     7608    -1     

Impacted Files	Coverage Δ
parquet/src/encodings/encoding.rs	95.05% <0.00%> (+0.19%)	⬆️

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[alamb]

Looks good to me