Add monoidal cats to monoidal preorders functor

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diff --git a/Functor/Free/Instance/MonoidalPreorder.agda b/Functor/Free/Instance/MonoidalPreorder.agda
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+{-# OPTIONS --without-K --safe #-}
+
+module Functor.Free.Instance.MonoidalPreorder where
+
+import Categories.Category.Monoidal.Utilities as ⊗-Util
+
+open import Categories.Category using (Category)
+open import Categories.Category.Instance.Monoidals using (Monoidals)
+open import Categories.Category.Monoidal using (MonoidalCategory)
+open import Categories.Functor using (Functor)
+open import Categories.Functor.Monoidal using (MonoidalFunctor)
+open import Categories.Functor.Monoidal.Properties using (∘-Monoidal)
+open import Categories.NaturalTransformation.NaturalIsomorphism.Monoidal using (module Lax)
+open import Category.Instance.MonoidalPreorders.Primitive using (MonoidalPreorders; _≃_; module ≃)
+open import Data.Product using (_,_)
+open import Level using (Level)
+open import Preorder.Primitive.Monoidal using (MonoidalPreorder; MonoidalMonotone)
+
+open Lax using (MonoidalNaturalIsomorphism)
+ 
+-- The free monoidal preorder of a monoidal category
+
+import Functor.Free.Instance.Preorder as Preorder
+
+module _ {o ℓ e : Level} where
+
+  monoidalPreorder : MonoidalCategory o ℓ e → MonoidalPreorder o ℓ
+  monoidalPreorder C = record
+      { U = Preorder.Free.₀ U
+      ; monoidal = record
+          { unit = unit
+          ; tensor = Preorder.Free.₁ ⊗
+          ; unitaryˡ = Preorder.Free.F-resp-≈ unitorˡ-naturalIsomorphism
+          ; unitaryʳ = Preorder.Free.F-resp-≈ unitorʳ-naturalIsomorphism
+          ; associative = λ x y z → record
+              { from = associator.from {x} {y} {z}
+              ; to = associator.to {x} {y} {z}
+              }
+          }
+      }
+    where
+      open MonoidalCategory C
+      open ⊗-Util monoidal
+
+  module _ {A B : MonoidalCategory o ℓ e} where
+
+    monoidalMonotone : MonoidalFunctor A B → MonoidalMonotone (monoidalPreorder A) (monoidalPreorder B)
+    monoidalMonotone F = record
+        { F = Preorder.Free.₁ F.F
+        ; ε = F.ε
+        ; ⊗-homo = λ p₁ p₂ → F.⊗-homo.η (p₁ , p₂)
+        }
+      where
+        module F = MonoidalFunctor F
+
+    open MonoidalNaturalIsomorphism using (U)
+
+    pointwiseIsomorphism
+        : {F G : MonoidalFunctor A B}
+        → MonoidalNaturalIsomorphism F G
+        → monoidalMonotone F ≃ monoidalMonotone G
+    pointwiseIsomorphism F≃G = Preorder.Free.F-resp-≈ (U F≃G)
+
+Free : {o ℓ e : Level} → Functor (Monoidals o ℓ e) (MonoidalPreorders o ℓ)
+Free = record
+    { F₀ = monoidalPreorder
+    ; F₁ = monoidalMonotone
+    ; identity = λ {A} → ≃.refl {A = monoidalPreorder A} {x = id}
+    ; homomorphism = λ {f = f} {h} → ≃.refl {x = monoidalMonotone (∘-Monoidal h f)}
+    ; F-resp-≈ = pointwiseIsomorphism
+    }
+  where
+    open Category (MonoidalPreorders _ _) using (id)
+
+module Free {o ℓ e} = Functor (Free {o} {ℓ} {e})