This PR has added the feature of normalizing newline codes in input buffers (LF and CR+LF codes to LF) in the input_adapter module and thus removed the handling of CR+LF codes implemented in the lexical_analyzer class.
The change will improve performance in scanning input buffers in the lexical_analyzer class since it no longer needs to take into account the existence of CR+LF codes contained in the target buffer.
The test suite has also been updated to validate the normalization feature.

Pull Request Checklist

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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.

Please don't

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