[FR]: Toggle for energy saver icon

[Arelad1]

Description

Adding a toggle like the other toolbar icons for the browser energy saver

Who's implementing?

• I'm willing to implement this feature myself

The problem

The energy saver icon is not something that is removable from the toolbar icons, which would be a nice thing given the fact that some people don't care about it being activated or not and it can waste place with the #helium-cat-ui experimental flag.

Possible solutions

Add a toggle in the already existing menu.

Maybe add something in the "main menu" with parameters and all of that says that the energy saver mode is activated.

Additional context

No response