featureAbility接口切换

FA模型接口	Stage模型接口对应d.ts文件	Stage模型对应接口
getWant(callback: AsyncCallback<Want>): void; getWant(): Promise<Want>;	@ohos.app.ability.UIAbility.d.ts	launchWant: Want;
startAbility(parameter: StartAbilityParameter, callback: AsyncCallback<number>): void; startAbility(parameter: StartAbilityParameter): Promise<number>;	application\UIAbilityContext.d.ts	startAbility(want: Want, callback: AsyncCallback<void>): void; startAbility(want: Want, options: StartOptions, callback: AsyncCallback<void>): void; startAbility(want: Want, options?: StartOptions): Promise<void>;
getContext(): Context;	@ohos.app.ability.UIAbility.d.ts	context: UIAbilityContext;
startAbilityForResult(parameter: StartAbilityParameter, callback: AsyncCallback<AbilityResult>): void; startAbilityForResult(parameter: StartAbilityParameter): Promise<AbilityResult>;	application\UIAbilityContext.d.ts	startAbilityForResult(want: Want, callback: AsyncCallback<AbilityResult>): void; startAbilityForResult(want: Want, options: StartOptions, callback: AsyncCallback<AbilityResult>): void; startAbilityForResult(want: Want, options?: StartOptions): Promise<AbilityResult>;
terminateSelfWithResult(parameter: AbilityResult, callback: AsyncCallback<void>): void; terminateSelfWithResult(parameter: AbilityResult): Promise<void>;	application\UIAbilityContext.d.ts	terminateSelfWithResult(parameter: AbilityResult, callback: AsyncCallback<void>): void; terminateSelfWithResult(parameter: AbilityResult): Promise<void>;
terminateSelf(callback: AsyncCallback<void>): void; terminateSelf(): Promise<void>;	application\UIAbilityContext.d.ts	terminateSelf(callback: AsyncCallback<void>): void; terminateSelf(): Promise<void>;
acquireDataAbilityHelper(uri: string): DataAbilityHelper;	@ohos.data.dataShare.d.ts @ohos.data.fileAccess.d.ts	createDataShareHelper(context: Context, uri: string, callback: AsyncCallback<DataShareHelper>): void; createDataShareHelper(context: Context, uri: string): Promise<DataShareHelper>; createFileAccessHelper(context: Context): FileAccessHelper; createFileAccessHelper(context: Context, wants: Array<Want>): FileAccessHelper;
hasWindowFocus(callback: AsyncCallback<boolean>): void; hasWindowFocus(): Promise<boolean>;	@ohos.window.d.ts	on(eventType: 'windowStageEvent', callback: Callback<WindowStageEventType>): void; 监听Active获焦状态
connectAbility(request: Want, options:ConnectOptions ): number;	application\UIAbilityContext.d.ts	connectServiceExtensionAbility(want: Want, options: ConnectOptions): number;
disconnectAbility(connection: number, callback:AsyncCallback<void>): void; disconnectAbility(connection: number): Promise<void>;	application\UIAbilityContext.d.ts	disconnectAbility(connection: number, callback:AsyncCallback<void>): void; disconnectAbility(connection: number): Promise<void>;
getWindow(callback: AsyncCallback<window.Window>): void; getWindow(): Promise<window.Window>;	@ohos.window.d.ts	getLastWindow(ctx: BaseContext, callback: AsyncCallback<Window>): void; getLastWindow(ctx: BaseContext): Promise<Window>;