feat(java,info): support multi-labels in yaml

[yangxk1]

Reason for this PR

close #779

What changes are included in this PR?

Are these changes tested?

Are there any user-facing changes?

[codecov-commenter]

Codecov Report

:x: Patch coverage is 57.14286% with 9 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 76.74%. Comparing base (24dbe1b) to head (0be5e67). :warning: Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../main/java/org/apache/graphar/info/VertexInfo.java	52.63%	7 Missing and 2 partials :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #781      +/-   ##
============================================
+ Coverage     76.72%   76.74%   +0.01%     
- Complexity      585      593       +8     
============================================
  Files            84       84              
  Lines          8864     8883      +19     
  Branches       1038     1042       +4     
============================================
+ Hits           6801     6817      +16     
- Misses         1833     1836       +3     
  Partials        230      230              

Flag	Coverage Δ
java-info	82.23% <57.14%> (+0.03%)	:arrow_up:

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[yangxk1]

Hey @Thespica, please help me review.