Unit tests for inherited ArkoudaCategoricalArray methods

Generate unit tests for inherited `ArkoudaCategoricalArray` methods:
  - `argmax`
  - `argmin`
  - `argsort`
  - `copy`
  - `delete`
  - `dropna`
  - `duplicated`
  - `equals`
  - `factorize`
  - `fillna`
  - `insert`
  - `interpolate`
  - `isin`
  - `isna`
  - `map`
  - `ravel`
  - `repeat`
  - `reshape`
  - `searchsorted`
  - `shift`
  - `transpose`
  - `unique`
  - `view`
