Reconcile case issues with module parameters

From @tischi [on the Image.sc Forum](https://forum.image.sc/t/command-line-recording-of-imagej2-plugins/8789):
> I realized something with the IJ2 Macro Command recording, namely that it removes all capitalization in the parameters, resulting in recordings such as:
> ```
> run("Elastix", "elastixdirectory=/Applications/elastix_macosx64_v4.8 workingdirectory=/Users/tischer/Desktop/elastix-tmp fixedimagefile=/Users/tischer/Desktop/elastix-output/muscles.tif-transformed.tif movingimagefile=/Users/tischer/Desktop/elastix-output/muscles.tif-transformed.tif elastixparameters=Default usemask=false useinitialtransformation=false transformationtype=Translation numiterations=1 numspatialsamples=100 gaussiansmoothingsigmas=10,10,10 bsplinegridspacing=50,50,50 finalresampler=FinalLinearInterpolator outputmodality=[Save output as Tiff]");
> ```
> This is fine and works as a macro, however when trying to use this as a starting point for running the command from command line, it does not work. The reason is that on the command line the parameters do need the correct capitalization, e.g. `elastixdirectory` should actually be `elastixDirectory`, otherwise one gets an error.
>
> Would it maybe be possible to unify this?

Furthermore: SciJava module parameters are case-sensitive, whereas ImageJ1 macro parameters are case-insensitive.

Start by tracing IJ2 Macro Command recording and command-line SciJava module parameter parsing, focusing on how parameter names are normalized or matched. Compare the case rules for ImageJ1 macro parameters and SciJava module parameters, then define a consistent behavior that works for both recorded macros and command-line invocation.

Written by the indexing model from the issue text.