Make FrontEnds have a reset mask function

What

In scanConsole there are at least a few points where very specific if FE is type <foo> blocks that require very particular handling of specific front-ends. This is not desirable. For example, in the reset-masks block here.

Proposal

It is probably better to just define a resetMasks() method to the FrontEnd base class. Then this block in scanConsole would just become:

if (mask_opt == 1) {
    for(FrontEnd* fe : bookie.feList) {
        fe->resetMasks();
    }
}

Using <algorithm> could reduce it all to a single line, as well.

With the above proposal, we move further towards making things under libYarr not be specific to a given front-end, enabling YARR to be compiled wihtout having to compile for all possible target front-ends (since currently scanConsole includes specific FrontEnds). Front-end specific things should be under lib<FrontEndType>.

Edited Dec 23, 2020 by Daniel Joseph Antrim