[RomApp] Fixing Ids issues in ROM files.

[Rbravo555]

📝 Description
This PR fixes a bug we encountered whenever the model part of the Full Order Model contains irregular indexes of Nodes, Elements and/or Conditions.

The previous implementation assumes all entities are present starting with the entity with Id=1, and the last entity's Id is equal to the number of entities.

🆕 Changelog

• In calculate_rom_basis_output_process.py: The file storing the ids "RightBasisMatrix.npy" now contains the proper ids, and not a simple np.arange
• In hrom_training_utility.py: The ids are mapped using python dictionaries from numpy ids to Kratos entities Ids

[SADPR]

I tested it and it works well. The code its correct.