Add edit option and add/remove option to pickList editor

[CarolineDenis]

Once this pull request is implemented, when navigating to Schema Config > Edit Pick List > Choose Entire Table, a new component will be displayed at the bottom of the dialog. It will be a slider containing all the prepTypes, such as by example (or any other available tables).

TODO:

• Include the option to edit each record.

• Provide the option to add or delete a record.

Please check if these changes have been implemented in this pull request.