[Feat][C++] Redesign and unify the implementation of validation in C++ Writer/Builder

[lixueclaire]

Is your feature request related to a problem? Please describe.
We need to develop a more comprehensive and consistent approach to validation across all of GraphAr's tools and libraries. As the first step, to redesign and unify the implementation of validation for Writer and Builder in the C++ library.

Describe the solution you'd like

• define the validation level in utils
• clarify the concepts of weak validate-level and strong validate-level
• hide the Validate interface to users and use validate-level as a parameter of the writing operation
• unify the implementation in Writer and Builder

Additional context
Next steps is to extend the validation level to other tools and libraries of other languages.

[lixueclaire]

solved by #186