feat: Allow filtering searches by 'source'

fix: Do not show API searches in recent list in app

app/models/SearchQuery.ts

@@ -4,10 +4,16 @@ import Model from "./base/Model";
 class SearchQuery extends Model {
   static modelName = "Search";
 
-  id: string;
-
+  /**
+   * The query string, automatically truncated to 255 characters.
+   */
   query: string;
 
+  /**
+   * Where the query originated.
+   */
+  source: "api" | "app" | "slack";
+
   delete = async () => {
     this.isSaving = true;