Groot schema now supports add comment

[siyuan0322]

What do these changes do?

🤖 Generated by Copilot at 24f683e

This pull request adds the ability to add comments to the schema definition of graphs, labels, and properties in GraphScope. It modifies the TypeDef class and related classes in Java and Python, the model.proto and graph_def.proto files, and the ClientDdlService and SchemaManager classes. It also adds logging and error handling improvements and updates the test cases accordingly.

Related issue number

Fixes #2801

[codecov-commenter]

Codecov Report

Merging #2802 (77f0755) into main (9efd4f6) will increase coverage by 37.53%.
The diff coverage is 50.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2802       +/-   ##
===========================================
+ Coverage   35.62%   73.15%   +37.53%     
===========================================
  Files          99       99               
  Lines       10518    10527        +9     
===========================================
+ Hits         3747     7701     +3954     
+ Misses       6771     2826     -3945     

Impacted Files	Coverage Δ
.../graphscope/tests/kubernetes/test_store_service.py	0.00% <0.00%> (ø)
python/graphscope/tests/unittest/test_graph.py	86.24% <ø> (+86.24%)	⬆️
python/graphscope/framework/graph_schema.py	63.79% <61.90%> (+4.70%)	⬆️

... and 64 files with indirect coverage changes

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