Adjusts the temporal `entity` using the provided `adjuster` with optional `args`.

The adjuster should either be a keyword which resolves to one of the
predefined adjusters (see `java-time.repl/show-adjusters`) an instance of
`TemporalAdjuster` or a function which returns another temporal entity when
applied to the given one:

  (adjust (local-date 2015 1 1) :next-working-day)
  => #<LocalDate 2015-1-2>

  (adjust (local-date 2015 1 1) :first-in-month :monday)
  => #<LocalDate 2015-1-5>

  (adjust (local-date 2015 1 1) plus (days 1))
  => #<LocalDate 2015-1-2>