Update the learning model to align with the latest graphlearn

[sighingnow]

What do these changes do?

See also the patch series on graph-learn repo:

• GraphScope on 3/3 part 1: add local/dist trainer, and a Data class to make the example simpler graph-learn#234
• GraphScope on 3/3 part 2: pick up the previous graphscope functions graph-learn#238

Related issue number

N/A

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[sighingnow]

Only tutorial #1 is revised, and others will be finished after the graph-learn pr been landed.

[codecov-commenter]

Codecov Report

Merging #2235 (6242824) into main (e375f8d) will increase coverage by 32.81%.
The diff coverage is 31.94%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2235       +/-   ##
===========================================
+ Coverage   40.19%   73.00%   +32.81%     
===========================================
  Files          87       89        +2     
  Lines        9847     9922       +75     
===========================================
+ Hits         3958     7244     +3286     
+ Misses       5889     2678     -3211     

Impacted Files	Coverage Δ
python/graphscope/tests/minitest/test_min.py	0.00% <0.00%> (ø)
python/graphscope/client/session.py	76.61% <10.00%> (+11.91%)	⬆️
python/graphscope/framework/graph.py	85.28% <63.33%> (+13.70%)	⬆️
python/graphscope/framework/app.py	91.70% <100.00%> (+21.19%)	⬆️
python/graphscope/interactive/query.py	84.14% <100.00%> (-4.88%)	⬇️
...on/graphscope/tests/kubernetes/test_demo_script.py	92.37% <100.00%> (+0.06%)	⬆️
python/graphscope/__init__.py	82.14% <0.00%> (ø)
python/graphscope/version.py	100.00% <0.00%> (ø)
python/graphscope/framework/dag.py	81.63% <0.00%> (+1.02%)	⬆️
... and 46 more

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