Make declare syntax not generate bytecode · Pull Request !886 · OpenHarmony/arkcompiler_ets_frontend

**Description**
Make declare syntax not generate bytecode.
```
declare var v1: string;
declare let v2: string;
declare const v3: string;

declare function AssertType(a: string, b: number): void;

declare class A1 {
    static a: number;
    b: string;
    func1(): void;
    func2(p: string): number;
}
declare abstract class A2 { }

declare type t = 1;

declare module m { export var a; };

declare global {
    var a: number;
    function f1():void;
}
export { }

declare namespace ns {
    export var a:number;
    var b:number;
    export function f1():void;
    function f2():void;
};

declare enum E { a = 1 };

declare interface I {
    a: string;
    func():void;
};
```
![输入图片说明](https://foruda.gitee.com/images/1677242316053240258/18cd7c41_10898835.png "屏幕截图 2023-02-24 203600.png")

**Related Issue**
#I6HNR4

**Tests**
test262/parser/compiler/tsc
![输入图片说明](https://foruda.gitee.com/images/1678796322571559376/36359eb0_10898835.png "屏幕截图 2023-02-14 160101.png")
![输入图片说明](https://foruda.gitee.com/images/1678796330546202008/473f12bf_10898835.png "屏幕截图 2023-02-13 095446.png")

类型	指派人员	状态
审查	godmiaozi 已审查通过 hhj	已完成 (1/1人)
测试	openharmony_ci 已测试通过	已完成 (1/1人)

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