Provide Automatic Binding of FormControl Error Messages and Status to input hints

#### Bug, feature request, or proposal:
This is a feature request.

This is related to #348, but is specifically asking for the material guidance to be a part of the framework, integrating with standard functionality of @angular/forms.

#### What is the expected behavior?

Looking at [Material Error Patterns](https://material.io/guidelines/patterns/errors.html), there seems to be a standard behavior of inlining form error message into the hint area (with a specific color).

It also supports separating the existing hint from the error message via a comma.

#### What is the current behavior?
Error state and messages are not handled.

#### What are the steps to reproduce?
There is nothing to show as this is feature that is yet to be implemented. [Material Error Patterns](https://material.io/guidelines/patterns/errors.html) should provide the expected behavior and visual treatment.

#### What is the use-case or motivation for changing an existing behavior?
The general gist is that if everyone were to follow the guidelines from material.io, you would end up with a fair amount of duplicate code for every input. The pervasiveness of the desired functionality seems like a prime candidate for handling at the framework level.

#### Which versions of Angular, Material, OS, browsers are affected?
All

#### Is there anything else we should know?

从 Material Error Patterns 参考资料和 issue 中描述的 Angular @angular/forms 集成开始。由于没有指定文件或测试，请识别框架入口点，并为自动错误/状态显示、提示分离以及所要求的视觉处理定义覆盖范围；完成的标准是该行为在框架层面提供，而不是在每个输入控件中重复实现。

由索引模型根据 Issue 内容生成。