Refactor node class implementation

[fktn-k]

In this PR the implementation of basic_node temlate class has been refactored, especially the way of resolving anchor/alias references.
Also, custom type traits for the library has been cleaned up since some of them are not used or defined redundantly.

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• Changes are described in the pull request or in a referenced issue.
• The test suite compiles and runs without any error.
• The code coverage on your branch is 100%.
• The documentation is updated if you added/changed a feature.

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