Add some ad-hoc transport to idtoiso cat lemmas

I'd prefer if I had a more systematic phrasing of this.

After    | File Name                             | Before
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0m18.84s | Category/Equality                     | 0m19.21s
0m10.65s | Groupoid                              | 0m10.03s
0m10.62s | Comma/Duals                           | 0m12.25s
0m08.87s | Comma/InducedFunctors                 | 0m08.46s
0m06.00s | Category/Morphisms                    | 0m05.56s
0m05.58s | SumPreCategory                        | 0m05.69s
0m05.12s | Functor/Equality                      | 0m04.51s
0m04.27s | Groupoid/Duals                        | 0m04.26s
0m03.96s | Groupoid/Functors                     | 0m03.72s
0m03.46s | UniversalProperties                   | 0m03.76s
0m03.42s | Grothendieck/ToSet                    | 0m02.90s
0m02.55s | BoolCategory                          | 0m02.77s
0m02.53s | Comma/CommaCategory                   | 0m02.75s
0m02.41s | NaturalTransformation/Duals           | 0m02.12s
0m02.06s | NaturalTransformation/Equality        | 0m02.21s
0m01.88s | Category/Product                      | 0m02.12s
0m01.70s | Hom                                   | 0m01.77s
0m01.62s | NaturalTransformation/Composition     | 0m01.55s
0m01.50s | NaturalTransformation/Product         | 0m01.35s
0m01.34s | NaturalTransformation/CompositionLaws | 0m01.31s
0m01.29s | Functor/Product                       | 0m01.53s
0m01.12s | NaturalTransformation/Isomorphisms    | 0m01.08s
0m00.93s | FunctorCategory/Morphisms             | 0m00.93s
0m00.78s | Cat/Morphisms                         |   N/A
0m00.70s | InitialTerminalCategory               | 0m00.58s
0m00.54s | Functor/CompositionLaws               | 0m00.50s
0m00.44s | Comma/Projection                      | 0m00.45s
0m00.44s | Common                                | 0m00.44s
0m00.39s | Discrete/Duals                        | 0m00.38s
0m00.35s | IndiscreteCategory                    | 0m00.29s
0m00.35s | FunctorCategory                       | 0m00.30s
0m00.32s | SetCategory                           | 0m00.30s
0m00.32s | Adjoint/UnitCounit                    | 0m00.26s
0m00.32s | NaturalTransformation/Identity        | 0m00.31s
0m00.30s | Cat                                   | 0m00.32s
0m00.29s | Functor/Duals                         | 0m00.24s
0m00.28s | Category/Objects                      | 0m00.28s
0m00.27s | Functor/Composition                   | 0m00.26s
0m00.24s | NatCategory                           | 0m00.21s
0m00.23s | IsGroupoid                            | 0m00.23s
0m00.22s | NaturalTransformation/Core            | 0m00.18s
0m00.21s | NaturalNumbersObject                  | 0m00.16s
0m00.18s | Category/Core                         | 0m00.15s
0m00.17s | Category/Duals                        | 0m00.14s
0m00.16s | Peano                                 | 0m00.14s
0m00.15s | NatCategory/Duals                     | 0m00.19s
0m00.15s | ComputableCat                         | 0m00.13s
0m00.14s | NaturalTransformation                 | 0m00.14s
0m00.12s | Category/Category                     | 0m00.10s
0m00.12s | DiscreteCategory                      | 0m00.09s
0m00.12s | Functor/Core                          | 0m00.12s
0m00.12s | Utf8                                  | 0m00.16s
0m00.12s | Grothendieck                          | 0m00.10s
0m00.10s | Functor/Identity                      | 0m00.14s
0m00.09s | Category/StrictCategory               | 0m00.08s
0m00.09s | Functor                               | 0m00.14s
0m00.06s | NotationsUtf8                         | 0m00.07s
0m00.06s | Notations                             | 0m00.05s
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1m50.66s | Total                                 | 1m49.46s