Fix typo and add rust market links

Adds links to the rust meta extension and the VScode rust page

MODELS.md

@@ -185,6 +185,7 @@ struct Track {
     is_available: bool,
     preview_source: Option<String>,
     source: String,
+    price: Option<rusty_money::Money>,
     created_by: PersonId,
     created_at: chrono::DateTime,
     modified_by: PersonId,
@@ -217,6 +218,7 @@ struct Album {
     is_available: bool,
     preview_source: Option<String>,
     source: String,
+    price: Option<rusty_money::Money>,
     created_by: PersonId,
     created_at: chrono::DateTime,
     modified_by: PersonId,
@@ -287,14 +289,23 @@ struct Article {
 A Comment represents a textual comment that a Person wants to attach contextually to an Artist, an Album, a Track, or a Playlist.
 
 ``` rust
-enum CommentTarget {
+enum CommentTargetType {
-    Label(LabelId),
+    Label,
-    Artist(ArtistId),
+    Artist,
-    Album(AlbumId),
+    Album,
-    Track(TrackId),
+    Track,
-    Playlist(PlaylistId),
+    Playlist,
-    Article(ArticleId),
+    Article,
-    Comment(CommentId),
+    Comment,
+}
+struct CommentTargetId {
+    label_id: Option<LabelId>,
+    artist_id: Option<ArtistId>,
+    album_id: Option<AlbumId>,
+    track_id: Option<TrackId>,
+    playlist_id: Option<PlaylistId>,
+    article_id: Option<ArticleId>,
+    comment_id: Option<CommentId>,
 }
 struct CommentId {
     id: String,
@@ -302,7 +313,8 @@ struct CommentId {
 struct Comment {
     id: CommentId,
     body: String,
-    target: CommentTarget,
+    target_type: CommentTargetType,
+    target_id: CommentTargetId,
     created_by: PersonId,
     created_at: chrono::DateTime,
     modified_by: Option<PersonId>,
@@ -393,6 +405,7 @@ struct Collection {
     albums: Option<Vec<Album>>,
     tracks: Option<Vec<Track>>,
     other_products: Option<Vec<OtherProduct>>,
+    price: Option<rusty_money::Money>,
 }
 ```
 
@@ -416,7 +429,7 @@ struct OtherProduct {
     is_available: bool,
     deleted_by: Option<PersonId>,
     deleted_at: Option<chrono::DateTime>,
-    requires_shipping: bool,
+    price: Option<rusty_money::Money>
 }
 ```
 
@@ -426,10 +439,10 @@ A Purchase represents one or more Tracks or Albums that a Person purchases from
 
 ``` rust
 enum PurchaseItemType {
-    Album(AlbumId),
+    Album,
-    Track(TrackId),
+    Track,
-    Collection(CollectionId),
+    Collection,
-    OtherProduct(OtherProductId),
+    OtherProduct,
 }
 struct PurchaseItemId {
     id: String,
@@ -439,15 +452,18 @@ struct SkuId {
 }
 struct Sku {
     id: SkuId,
-    item: PurchaseItemType,
+    album_id: Option<AlbumId>,
+    track_id: Option<TrackId>,
+    collection_id: Option<CollectionId>,
+    other_product_id: Option<OtherProductId>,
     variant: Option<String>,
-    description: Option<String>,
+    discount_percentage: Option<f64>,
-    price: Option<rusty_money::Money>,
+    discount_flatrate: Option<rusty_money::Money>,
-    requires_shipping: bool,
 }
 struct PurchaseItem {
     id: PurchaseItemId,
-    sku: SkuId,
+    type: PurchaseItemType,
+    sku: Option<SkuId>,
     quantity: usize,
 }
 enum PurchaseState {
@@ -465,35 +481,5 @@ struct Purchase {
     state: PurchaseState,
     purchased_by: Person,
     purchased_at: Option<chrono::DateTime>,
-    fulfilled_by: Option<Person>,
-    fulfilled_at: Option<chrono::DateTime>,
-}
-```
-
-# CouponCode
-
-A CouponCode represents a code a Person can enter to receive a discount on a PurchateItem or on a Purchase.
-
-``` rust
-struct CouponCodeId {
-    id: String,
-}
-struct CouponCode {
-    id: CouponCodeId,
-    name: String,
-    code: String,
-    uses: usize,
-    max_uses: usize,
-    expiration: Option<chrono::DateTime>,
-    discount_flat: Option<rusty_money::Money>,
-    discount_percentage: Option<f32>,
-    skus: Option<Vec<SkuId>>,
-    is_active: bool,
-    created_by: PersonId,
-    created_at: chrono::DateTime,
-    modified_by: PersonId,
-    modified_at: chrono::DateTime,
-    deleted_by: Option<PersonId>,
-    deleted_at: Option<chrono::DateTime>,
 }
 ```