chore(*): add mathlib4 synchronization comments (#18923)
Regenerated from the [port status wiki page](https://github.com/leanprover-community/mathlib/wiki/mathlib4-port-status).
Relates to the following files:
* `algebra.continued_fractions.basic`
* `analysis.convex.complex`
* `analysis.special_functions.trigonometric.chebyshev`
* `category_theory.category.Groupoid`
* `category_theory.functor.left_derived`
* `category_theory.monoidal.free.basic`
* `category_theory.monoidal.tor`
* `category_theory.sites.left_exact`
* `data.complex.determinant`
* `data.complex.module`
* `data.matrix.rank`
* `linear_algebra.affine_space.finite_dimensional`
* `linear_algebra.affine_space.matrix`
* `linear_algebra.determinant`
* `linear_algebra.free_module.determinant`
* `measure_theory.measure.outer_measure`
* `ring_theory.localization.inv_submonoid`
* `topology.algebra.module.determinant`
