Use unit+counit+zig+zag as the default adjunction

Also put the coercions in there, so we don't depend on funext.

After    | File Name                             | Before
-----------------------------------------------------------
0m58.01s | Adjoint/Hom                           | 1m22.45s
0m22.48s | Adjoint/UnitCounitCoercions           |   N/A
0m19.27s | Category/Equality                     | 0m19.70s
0m10.09s | Comma/Duals                           | 0m09.97s
0m07.88s | Comma/InducedFunctors                 | 0m07.73s
0m07.22s | Groupoid                              | 0m07.26s
0m05.21s | Category/Morphisms                    | 0m05.58s
0m04.62s | SumPreCategory                        | 0m04.63s
0m04.12s | Groupoid/Duals                        | 0m04.21s
0m04.08s | Functor/Equality                      | 0m03.96s
0m03.45s | Groupoid/Functors                     | 0m03.56s
0m03.26s | UniversalProperties                   | 0m03.31s
0m02.72s | Grothendieck/ToSet                    | 0m02.82s
0m02.54s | BoolCategory                          | 0m02.50s
0m02.41s | Comma/CommaCategory                   | 0m02.26s
0m01.92s | Category/Product                      | 0m01.88s
0m01.84s | NaturalTransformation/Duals           | 0m01.79s
0m01.80s | NaturalTransformation/Equality        | 0m01.83s
0m01.63s | Hom                                   | 0m01.58s
0m01.48s | NaturalTransformation/Product         | 0m01.41s
0m01.32s | NaturalTransformation/Composition     | 0m01.33s
0m01.25s | Functor/Product                       | 0m01.17s
0m01.20s | NaturalTransformation/CompositionLaws | 0m01.24s
0m01.12s | NaturalTransformation/Isomorphisms    | 0m01.08s
0m00.78s | Cat/Morphisms                         | 0m00.72s
0m00.70s | FunctorCategory/Morphisms             | 0m00.68s
0m00.63s | InitialTerminalCategory               | 0m00.59s
0m00.45s | Functor/CompositionLaws               | 0m00.44s
0m00.38s | Comma/Projection                      | 0m00.40s
0m00.37s | IndiscreteCategory                    | 0m00.35s
0m00.36s | NaturalTransformation/Identity        | 0m00.28s
0m00.34s | Common                                | 0m00.34s
0m00.33s | Discrete/Duals                        | 0m00.32s
0m00.30s | SetCategory                           | 0m00.33s
0m00.30s | Cat                                   | 0m00.28s
0m00.30s | Adjoint/UnitCounit                    | 0m00.24s
0m00.25s | FunctorCategory                       | 0m00.28s
0m00.24s | Category/Objects                      | 0m00.24s
0m00.24s | Functor/Duals                         | 0m00.24s
0m00.21s | NatCategory                           | 0m00.20s
0m00.21s | Functor/Composition                   | 0m00.23s
0m00.19s | IsGroupoid                            | 0m00.19s
0m00.19s | NatCategory/Duals                     | 0m00.15s
0m00.18s | NaturalNumbersObject                  | 0m00.16s
0m00.17s | Category/Core                         | 0m00.18s
0m00.17s | NaturalTransformation/Core            | 0m00.16s
0m00.16s | Adjoint                               | 0m00.14s
0m00.15s | Category/Duals                        | 0m00.14s
0m00.14s | ComputableCat                         | 0m00.17s
0m00.13s | Peano                                 | 0m00.13s
0m00.12s | Utf8                                  | 0m00.11s
0m00.12s | Category/UnivalentCategory            | 0m00.10s
0m00.11s | NaturalTransformation                 | 0m00.10s
0m00.11s | Category/StrictCategory               | 0m00.11s
0m00.11s | Functor/Core                          | 0m00.12s
0m00.11s | DiscreteCategory                      | 0m00.10s
0m00.11s | Grothendieck                          | 0m00.08s
0m00.10s | Functor/Identity                      | 0m00.08s
0m00.07s | Category                              | 0m00.09s
0m00.07s | Functor                               | 0m00.09s
0m00.04s | NotationsUtf8                         | 0m00.04s
0m00.04s | Notations                             | 0m00.04s
-----------------------------------------------------------
2m59.89s | Total                                 | 3m01.89s