add NewlineAtEndOfFile config for checkstyle

[Nicole00]

No description provided.

[codecov-commenter]

Codecov Report

Merging #353 (d2f48f2) into master (3518faa) will decrease coverage by 0.10%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #353      +/-   ##
============================================
- Coverage     62.27%   62.17%   -0.11%     
+ Complexity      609      606       -3     
============================================
  Files            55       55              
  Lines          2826     2826              
  Branches        396      396              
============================================
- Hits           1760     1757       -3     
- Misses          792      793       +1     
- Partials        274      276       +2     

Impacted Files	Coverage Δ
.../client/storage/scan/ScanVertexResultIterator.java	56.60% <0.00%> (-1.89%)	⬇️
...t/nebula/client/storage/scan/ScanVertexResult.java	60.31% <0.00%> (-1.59%)	⬇️

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