New rules to handle whitespace in array definitions

[JHertz5]

I'd like new rules to handle whitespace around the array and of keywords in constrained_array_definitions and unbounded_array_definitions, e.g. changing the following code from this

architecture a of b is

  type my_array is array        (natural range <>)         of      integer;

  type my_array2 is array        (natural range 0 to 7)        of      std_logic_vector(7 downto 0);

begin

end architecture a;

to

architecture a of b is

  type my_array is array(natural range <>) of integer;

  type my_array2 is array(natural range 0 to 7) of std_logic_vector(7 downto 0);

begin

end architecture a;

[JHertz5]

Subtask of #1443. FYI @maltaisn.

[JHertz5]

I've raised #1495. @maltaisn, could you please try this branch and check that it works on your end?