Use auto to get return of Dest and add a ForEach for range specified by iterator pair

[acezen]

Signed-off-by: acezen weibin.zen@gmail.com

What do these changes do?

Use auto to get return of Dest and add a ForEach for a set of VertexRange

Related issue number

related issue: alibaba/GraphScope#888

[codecov-commenter]

Codecov Report

Merging #79 (4572bbf) into master (3358783) will increase coverage by 0.01%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##           master      #79      +/-   ##
==========================================
+ Coverage   82.28%   82.30%   +0.01%     
==========================================
  Files          50       50              
  Lines        3133     3136       +3     
==========================================
+ Hits         2578     2581       +3     
  Misses        555      555              

Flag	Coverage Δ
app_tests	82.30% <88.88%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
grape/utils/gcontainer.h	83.72% <ø> (ø)
grape/utils/vertex_array.h	100.00% <ø> (ø)
grape/parallel/auto_parallel_message_manager.h	78.88% <66.66%> (ø)
grape/parallel/default_message_manager.h	81.74% <66.66%> (ø)
grape/parallel/parallel_engine.h	94.52% <100.00%> (+0.23%)	⬆️
grape/parallel/thread_local_message_buffer.h	95.12% <100.00%> (ø)

[acezen]

cc @yecol