Custom token attributes should remember field keys from previously created tokens

[lenilsonjr]

Summary

In the token creation tool, when you select NFT, you may add it to a collection and add custom attributes to your NFT. Right now the custom attribute label and value are just simple text fields.

Objective 1

The label field for any custom attribute should be an autocomplete field (you can use react-select for this, we have the Formik-enabled src/components/_General/_FormikElements/Select.tsx as well).

The field should auto suggest past custom attributes used in other tokens authored by the wallet. You can check the collection autocomplete field logic for how to do this.

Objective 2

After selecting a collection for your NFT, all the custom attributes labels of the previous NFT created in that collection should copy over to the form. Example: if the last NFT of a collection had "Strength" and "Stamina" as custom attributes, they should immediately show up when I'm creating a new NFT for that collection.

Thanks Mixic in Discord for the suggestion