message: Fix extension coreTSModule error when debug extension
diff: @@ -4,7 +4,6 @@ import { CoreTemplateStudio } from "./coreTemplateStudio";
  export class CoreTSModule extends WizardServant {
  clientCommandMap: Map<ExtensionCommand, (message: any) => Promise<IPayloadResponse>>;
  - coreTemplateStudio: CoreTemplateStudio = CoreTemplateStudio.GetExistingInstance();
  constructor() {
  super();
  @@ -21,7 +20,7 @@ export class CoreTSModule extends WizardServant {
  }
  async getFrameworks(message: any): Promise<IPayloadResponse> {
  - const frameworks = await this.coreTemplateStudio.getFrameworks(message.payload.projectType);
  + const frameworks = await CoreTemplateStudio.GetExistingInstance().getFrameworks(message.payload.projectType);
  return {
  payload: {
  scope: message.payload.scope,
  @@ -33,14 +32,14 @@ export class CoreTSModule extends WizardServant {
  }
  async getTemplateConfig(message: any): Promise<IPayloadResponse> {
  - const payload = this.coreTemplateStudio.getTemplateConfig();
  + const payload = CoreTemplateStudio.GetExistingInstance().getTemplateConfig();
  payload.scope = message.payload.scope;
  return { payload };
  }
  async getPages(message: any): Promise<IPayloadResponse> {
  const { projectType, frontendFramework, backendFramework } = message.payload;
  - const pages = await this.coreTemplateStudio.getPages(projectType, frontendFramework, backendFramework);
  + const pages = await CoreTemplateStudio.GetExistingInstance().getPages(projectType, frontendFramework, backendFramework);
  return {
  payload: {
  scope: message.payload.scope,
  @@ -51,7 +50,7 @@ export class CoreTSModule extends WizardServant {
  async getFeatures(message: any): Promise<IPayloadResponse> {
  const { projectType, frontendFramework, backendFramework } = message.payload;
  - const features = await this.coreTemplateStudio.getFeatures(projectType, frontendFramework, backendFramework);
  + const features = await CoreTemplateStudio.GetExistingInstance().getFeatures(projectType, frontendFramework, backendFramework);
  return {
  payload: {
  scope: message.payload.scope,
  