feat: clean up 'number' params instantiation

[dndrks]

hiiii!

this PR addresses the conditions which led to @sonocircuit's note in the norns study group:

one thing that does not work on seamstress is returning the note value in the params instead of the number. this works on norns: params:add_number("root_note", "root note", 24, 84, 60, function(param) return mu.note_num_to_name(param:get(), true) end) but returns a concat error in seamstress

new

• added a type check in params:add_number -- if units is a function, then we assume that is meant to be the formatter and we pass nil to our generated controlspec
• added a wrap argument to params:add_number, with a similar guardrail as above
• both of these assumptions print a heads-up to the console, eg.

  >> norns_style_wrap_root_note: 'units' was specified as a function, assuming 'formatter'.
     check seamstress scripting API for usage.

• added a params:get_wrap(id) action which allows querying the wrap state
• confirmed that params:get_range(id) returns a table of {min, max} in the API docs

test script

local mu = require 'musicutil'

function init()
  params:add_number("norns_style-no_wrap_root_note", "root note", 24, 84, 60, function(param)
    return mu.note_num_to_name(param:get(), true)
  end)
  params:add_number("norns_style-wrap_root_note", "root note", 24, 84, 60, function(param)
    return mu.note_num_to_name(param:get(), true)
  end, true)
  params:add{
    type = "number",
    id = "wrap_root_note",
    name = "root note",
    min = 24,
    max = 84,
    default = 60,
    formatter = function(param)
      return mu.note_num_to_name(param:get(), true)
    end,
    wrap = true
  }
end

testing well over here, please lmk if there's anything wonky tho!!