Add a way to get vID from orginalID or allow originalID to be used in RemoveTaskItem

[Taffaz]

Is your feature request related to a problem? Please describe.
Following import using JSGantt.parseXMLString the id provided in the XML is not the same as that returned by GetID. When trying to remove a task using the XML provided value the code doesn't work as it is looking at the new ID.

Describe the solution you'd like
Either a method that returns the new ID from the originalID (which is accessible) or allow originalID to be used in RemoveTaskItem and potentially other functions that use ID.

Describe alternatives you've considered
Keep the IDs the same as the XML input so there is no difference between the two

Additional context
I am happy to make this change as I modified the source myself to get the functionality I needed.

[Taffaz]

In my local version of the code I resolved this by adding a function called GetIdFromOriginal that returned general_utils_1.hashKey(pId)

[mariohmol]

Hi @Taffaz , thanks for the feedback. could you please provide a PR ?

[JeremyHornet900]

I guess the getOriginalID was meant for this, when you go to the jsgantt.js file from line 3800 something you can see all the get functions available and then all the set functions.