[tslint] Type number trivially inferred from a number literal, remove type annotation (no-inferrable-types) - Angular 6

出现问题的语句：

public rating: number = 0;

Disable的方法：

• open tslint.json
• find the "no-inferrable-types" attribute
• add ignore-properties to its array

参考：https://stackoverflow.com/questions/46799828/tslint-type-trivially-inferred-why-is-it-bad-practice-to-include-the-type-he