Fix simulator bugs and a few improvements#3966

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failiz wants to merge 16 commits intofritzing:mainfrom

failiz:fix_simulator_bugs

Commits on Jul 20, 2022

fixes bug in macOS when the darkMode is active. In that case, the text of the multimeters changes to white and it is impossible to see.
failiz
committed

Commits on Jul 24, 2022

make spice field and tags selectable (and able to copy them)
failiz
committed

Commits on Jul 25, 2022

code to handle RGB leds
failiz
committed

Commits on Jul 26, 2022

Commits on Jul 27, 2022

Make error message useful. Now, it specifies which SVG file is missing for that ModuleID. The message that shows this errors also specifies the name of the FPZ file.
failiz
committed

Commits on Apr 26, 2023

show infinity in captal letters ("INF") in the multimeter
failiz
committed