New Reactos ((r.dt.after. params)) and ((r.dt.before. params))

[codotronix]

Create a new reacto ((r.dt.after. params)) which will give us date / time / both after the given params calculated after current time.

Params can be any or all of the following,
for any number n,

nY => will return year after n years 2025, 2030 etc (though this can be done with ((r.calc.)) also
nM => will return month after n months, january february etc
nD => Day after n days, sunday montday etc
nh => Hours after n hours
nm => minutes after n minutes
ns => seconds after n seconds

Similarly, ((r.dt.before. params)) needs to be created.