Extend to input by Tescan instruments

[gabinoumbe]

This PR is an extension to Tescan input. It introduces significant improvements to the tomography mapping pipeline by adding support for multiple sources and parsers, and enriching the output with a fileLink field in image metadata (md) records. The fileLink record also prepares the code for transparency improvement in how images metadata are grouped within datasets.

New parsers:

• Dataset_infoParser
• TomographyProjectParser
• TxtParser

New input map files:

• input map_tescan

Changes made:

1. MapFileReader updated:

• sources and parser fields in the map file now accept either a single string or a list.
• Ensures that if both are lists, their lengths must match (1-to-1 mapping between source and parser).
• If only one parser is provided for multiple sources, it is replicated across all sources.

2. InputReader updated:

• Handles pairs of (source, parser) instead of a single parser and a single source.
• Adjust retrieve_setup_info and retrieve_run_info logics to parse each (source, parser) pair.

3. Output Improvements

• Add fileLink (reflected filePath) of every image in the final output while preserving the Identifier type.
• Ensures that OutputWriter can stitch together a list of setup_infos and a list of run_infos.

This PR closes #36 and #17