[Feature] Add deposit to fast-unstake (#12366)

* [Feature] Add deposit to fast-unstake

* disable on ErasToCheckPerBlock == 0

* removed signed ext

* remove obsolete import

* remove some obsolete stuff

* fix some comments

* fixed all the comments

* remove obsolete imports

* fix some tests

* CallNotAllowed tests

* Update frame/fast-unstake/src/lib.rs

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* fix tests

* fix deregister + tests

* more fixes

* make sure we go above existential deposit

* fixed the last test

* some nit fixes

* fix node

* fix bench

* last bench fix

* Update frame/fast-unstake/src/lib.rs

* ".git/.scripts/fmt.sh" 1

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: command-bot <>