Add comments to PluginMeta definition

src/controllers/plugins/Plugin.hpp

@@ -19,17 +19,30 @@ struct lua_State;
 namespace chatterino {
 
 struct PluginMeta {
-    // required fields
+    // for more info on these fields see docs/plugin-info.schema.json
+
+    // display name of the plugin
     QString name;
+
+    // description shown to the user
     QString description;
+
+    // plugin authors shown to the user
     std::vector<QString> authors;
+
+    // license name
     QString license;
+
+    // version of the plugin
     semver::version version;
 
-    // optional
+    // optionally a homepage link
     QString homepage;
+
+    // optionally tags that might help in searching for the plugin
     std::vector<QString> tags;
 
+    // errors that occurred while parsing info.json
     std::vector<QString> errors;
 
     bool isValid() const