Added silent variations of tagtoleft and tagtoright

[lilly-lizard]

My preferred workflow is to bind ALT+n to viewtoright and ALT+SHIFT+n to tagtorightsilent so I can do one or the other or both easily.

I've made a private tagtoleft_general function to avoid code duplication and help maintainability in the future.

Note that I also tried to implement a silent version of tagmon but encountered some weird behavior around focusing that I've yet to figure out...

[Wateir]

A bunch of the code of this function is basicly the same as the one for
tagtoleft_general, is not just possible to make a function name idk tagtoside_general and just pass it target >>= 1; on one case, and target <<= 1; on the other case ?

[Wateir]

Something like

int32_t tagtoside_general(const Arg *arg, bool silent, bool left){
    if (!selmon)
		return 0;

	if (selmon->sel != NULL &&
		__builtin_popcount(selmon->tagset[selmon->seltags] & TAGMASK) == 1) {

		uint32_t target = selmon->tagset[selmon->seltags];
		if (target & 1) {
			// 1 wraps around to 9
			target |= 1 << LENGTH(tags);
		}
		if (left)
		    target >>= 1;
		else
		    target <<= 1;

		if (silent)
			tagsilent(&(Arg){.ui = target, .i = arg->i});
		else
			tag(&(Arg){.ui = target, .i = arg->i});
	}
	return 0;
   }
}

int32_t tagtoleft(const Arg *arg) {
	return tagtoside_general(arg, false, true);
}

int32_t tagtoleftsilent(const Arg *arg) {
	return tagtoside_general(arg, true, true);
}

int32_t tagtoright(const Arg *arg) {
	return tagtoside_general(arg, false, false);
}

int32_t tagtorightsilent(const Arg *arg) {
	return tagtoside_general(arg, true, false);
}

Continue you're idea of refractor code

[lilly-lizard]

good idea, have pushed a commit now using tagtoside_general. have tested and still works