Fixed the version at the time of releasing the pip package.

[lidongze0629]

What do these changes do?

• Add __version__ in graphscope module.

import graphscope
graphscope.__version__

• Fix the version at the time of releasing the pip package.

Related issue number

Fixes #26

[codecov-io]

Codecov Report

Merging #49 (08229a0) into main (221536a) will increase coverage by 0.04%.
The diff coverage is 90.90%.

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
+ Coverage   77.99%   78.04%   +0.04%     
==========================================
  Files          49       49              
  Lines        4472     4473       +1     
==========================================
+ Hits         3488     3491       +3     
+ Misses        984      982       -2     

Impacted Files	Coverage Δ
python/graphscope/deploy/tests/test_demo_script.py	99.00% <87.50%> (ø)
python/graphscope/config.py	100.00% <100.00%> (ø)
python/graphscope/deploy/kubernetes/utils.py	73.95% <0.00%> (+1.04%)	⬆️

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[sighingnow]

Note that there are version number in setup.py in python/ and coordinator for graphscope and gs-coordinator packages.

[sighingnow]

LGTM.

[sighingnow]

Please review the "coordinator/setup.py" as "python/setup.py".