Add support for meals (#1)

Reviewed-on: #1
Co-authored-by: Simon Bernier St-Pierre <git.sbstp.ca@gmail.com>

src/domain.rs

@@ -52,6 +52,23 @@ pub struct Category {
     pub name: String,
 }
 
+#[derive(Clone, Debug)]
+pub struct Meal {
+    pub id: i64,
+    pub name: String,
+    pub description: String,
+    pub ingredients: Vec<MealIngredient>,
+}
+
+#[derive(Clone, Debug)]
+pub struct MealIngredient {
+    pub id: i64,
+    pub name: String,
+    pub quantity: String,
+    pub note: String,
+    pub category_id: Option<i64>,
+}
+
 #[derive(Clone, Debug)]
 pub struct PresenceUser {
     pub user_id: i64,