Fix - Show if an Input Field is Required

[LuanEdCosta]

• Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Fix

• What is the current behavior? (You can also link to an open issue here)
  The user cannot know which fields are required and which are not.

• What is the new behavior (if this is a feature change)?
  Added the required prop in some TextFields and in some labels to help the user.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
  No

• Is there any issue related to this PR in other repository? (such as dojot/dojot)
  GUI - NX - Empty template name dojot#2544

[LuanEdCosta]

@luisfelipefurlan @LeonamMoura
Even though the issue pointed the problem only for the template creation page, I added the required prop for TextFields of other pages.

I also want to ask what do you think about adding a * on the attr table header?