Array attribute typing seems to be wrong

The following line suggest that `array` attribute takes in two arguments, type and options.
https://github.com/adopted-ember-addons/ember-data-model-fragments/blob/cfa5e5e1716d2508a13a0e973cf5b51c45bedb79/addon/attributes.js#L151

Whereas the existing type information defined in the line below suggest `array` attribute does not take any arguments:
https://github.com/adopted-ember-addons/ember-data-model-fragments/blob/cfa5e5e1716d2508a13a0e973cf5b51c45bedb79/attributes.d.ts#L33

Compare the runtime signature for `array` in addon/attributes.js at line 151 with its declaration in attributes.d.ts at line 33. Update the type information so it matches the arguments accepted by the runtime, then verify that the declaration and usage are consistent.

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