Introduce ndjson reader for project import

What does this MR do?

@ayufan: This is currently re-based and targeting the !27679 (merged)

Introduce ndjson Reader for project import

• this implements the Reader that can parse ndjson
• enable both legcay and ndjson readers on importing side. And detect the file format to find the valid reader

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Closes #210513 (closed)