add new dancer struct

dont want to need to throw strings on the heap to create new dancers in the database

src/lib/models.rs

@@ -30,6 +30,15 @@ pub struct Dancer {
     pub name: String,
 }
 
+#[derive(Insertable, Debug)]
+#[diesel(table_name = crate::schema::dancers)]
+#[diesel(check_for_backend(diesel::mysql::Mysql))]
+pub struct NewDancer<'a> {
+    pub id: u32,
+    pub stage_name: &'a str,
+    pub name: &'a str,
+}
+
 #[derive(Identifiable, Queryable, Selectable, Debug)]
 #[diesel(belongs_to(Dancer, foreign_key = dancer))]
 #[diesel(table_name = crate::schema::shows)]