[To dev/1.1] Add TsFileLastReader for retrieving last points in a TsFile

[jt2594838]

#498

[codecov-commenter]

Codecov Report

❌ Patch coverage is 77.58621% with 52 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.13%. Comparing base (aa32e6e) to head (49aca35).
⚠️ Report is 8 commits behind head on dev/1.1.

Files with missing lines	Patch %	Lines
...rg/apache/tsfile/read/reader/TsFileLastReader.java	76.42%	33 Missing ⚠️
...a/org/apache/tsfile/read/TsFileSequenceReader.java	84.61%	12 Missing ⚠️
...sfile/file/metadata/statistics/TimeStatistics.java	0.00%	4 Missing ⚠️
...pache/tsfile/file/metadata/TimeseriesMetadata.java	62.50%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           dev/1.1     #506      +/-   ##
===========================================
+ Coverage    58.94%   59.13%   +0.18%     
===========================================
  Files          419      420       +1     
  Lines        27820    28043     +223     
  Branches      3648     3686      +38     
===========================================
+ Hits         16399    16582     +183     
- Misses       11225    11265      +40     
  Partials       196      196              

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