Auto select field when generating constructors (#2508)

Signed-off-by: Shi Chen <[email protected]>

Author: CsCherrYY

src/protocol.ts

@@ -192,6 +192,7 @@ export interface VariableBinding {
     name: string;
     type: string;
     isField: boolean;
+    isSelected?: boolean;
 }
 
 export interface CheckHashCodeEqualsResponse {

src/sourceAction.ts

@@ -298,6 +298,7 @@ function registerGenerateConstructorsCommand(languageClient: LanguageClient, con
                 return {
                     label: `${field.name}: ${field.type}`,
                     originalField: field,
+                    picked: field.isSelected
                 };
             });
             const selectedFieldItems = await window.showQuickPick(fieldItems, {