🦺[Tech Debt] Mark Unused code script

[kcw-grunt]

Goal

Describe the work to be done

To further manage our codebase we should add a script that lets us know that we added code that is not being used.
To do this effectively, I recommend adding all the code in a container directory. This way it wouldn't look at dependencies (which we wouldn't want to touch)

Reference

#Unused
file="${SRCROOT}/BuildTools/unused.rb"
if [ -f "$file" ]
then
echo "$file found."
ruby ${SRCROOT}/BuildTools/unused.rb xcode
else
echo "unused.rb doesn't exist"
fi

Definition of Done

• Compiles and sets warnings when code classes and/or methods are unused
• Bonus Points: Global switch on / off for developers

[Iferencak]

I added the unused ruby script. There were a couple of false-positives so I added the customFilterNames array in the script. Usually the delegate methods get flagged so I added the ones I could find in the current codebase to the filter. If there are new false positives, they can just be added to the array. Also, removed names with "_Previews" from triggering.

I agree that the file structure in the project should be a bit more structured, but this was not necessary for this task as the script automatically ignores dependencies.

As for the global switch, I couldn't find a neat way to achieve this, @kcw-grunt did you have some specific way how to do this?