add: circle stacks

crates/app/src/routes/api/v1/mod.rs

@@ -616,12 +616,15 @@ pub struct CreatePost {
     pub poll: Option<CreatePostPoll>,
     #[serde(default)]
     pub title: String,
+    #[serde(default)]
+    pub stack: String,
 }
 
 #[derive(Deserialize)]
 pub struct CreateRepost {
     pub content: String,
     pub community: String,
+    pub stack: String,
 }
 
 #[derive(Deserialize)]