refactor(TUI): confirmation message for `save` action

[ossdhaval]

After changing any configuration using TUI, when we hit save, the confirmation message about changes getting successfully saved, is delivered in either of these two ways on different screens.

1. A pop-up

2. A message in the bottom toolbar

So, the user experience is inconsistent. I would request:

• Pick one approach to deliver this message and implement it consistently across TUI all screens
• I would recommend the first approach with a dedicated pop-up as the bottom bar's tooltip is hard to notice. In this case, to the user, the save button seems to be doing nothing till the time they spot the message at the bottom. Resulting in bad user experience.

[KyleChaukccs]

HI @ossdhaval and @moabu, Is it confirmed that the first approach will be used for the alignment? If so, I can work on this for the next couple of weekends.

[ossdhaval]

I am ok with first approach as I suggested. @moabu ? @devrimyatar ?

[moabu]

I suggest 1.

[devrimyatar]

There is only one popup message for confirming saved changes. Others are in progress bar. If we display all in popup, it may be annoying.