preparing the new magnifier types (#19915)
pre - #19473
parts of #19810
Summary of the issue:
needed to add logic for changing types before new types
Description of user facing changes:
Magnifier got a new cycle gesture to change to soon to be implemented new types: fixed/docked/lens
Description of developer facing changes:
added a placeholder for easier developement to be done.
Description of development approach:
as the new modes will inherite from the same logics, first making sure they can be added correctly to the actual code
