Support for type aliases

[clo-vis]

Describe the Features

Type aliases are not supported. For example, with:

type Alias = int

class State(rx.State):
    count: Alias = 0

I get TypeError: Unsupported type Alias for guess_type. (the error message could also be better - wtf is "guess_type"?)

The algorithm that determines guess_type could try to resolve type aliases before giving up.

• Show an example / use cases for the new feature.

class State(rx.State):
    a: Literal["amber", "blue", ... many other colors, "yellow"] 
    b: Literal["amber", "blue", ... many other colors, "yellow"] 

would become

type ColorSchema = Literal["amber", "blue", ... many other colors, "yellow"]

class State(rx.State):
    a: ColorSchema 
    b: ColorSchema

[linear]

ENG-9512