Support for units with the same signature

[FEA-eng]

Is there an existing issue for this?

• I have searched the existing issues

Problem description

@marioalexis84 I'm creating this issue just so we don't forget about it. For example, currently, the N*mm unit (which is commonly used for moments) may cause conflict with the work unit.

@maxwxyz FYI

Full version info

OS: Windows 10 build 19045
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.37358 (Git)
Build type: Release
Branch: main
Hash: 0e24e121eb3e5708c380596e0a9fd583befac977
Python 3.11.9, Qt 5.15.13, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: Polish/Poland (pl_PL)

Subproject(s) affected?

Core

Anything else?

No response

Code of Conduct

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