Transformer improvements

[nagyszabi]

The following improvements would take place:

• Create a cache for scripts to not compile them every time
• Define data types using a library which supports inferring or generating TypeScript types, to have proper type checking.
  And also support generating types in string form, to dynamically load the editor with the correct types. This would also help with validating and testing the transformer's code
• Check if all the isolated-vm features work with pkg
• Create a confirmation modal for transformer deletion
• Take into account the fileRegex for raw inputs when selecting transformers