Make `gr.State` optionally generic

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Is your feature request related to a problem? Please describe.
It's frustrating that gr.State isn't generic - because I can simply pass around references to gr.State and I can have no idea what's the type of value they store.

The only way I found, which is not the elegant IMO - is explicitly providing type annotations to parameters that derive state. E.g.

config_state = gr.State(Config(name="alex"))
# ...

def render_personal_details_tab(state: gr.State):
        @gr.render(inputs=[config_state])
        def render_name_textbox(config_value: Config):
            gr.Textbox(value=config_value.name)
            # ...

Describe the solution you'd like
I suggest making gr.State optionally accept a type hint generic (like gr.State[Config]). It may be automatically inferred from the initial value to the constructor of gr.State:

config_state = gr.State(Config(name="alex"))
# ^ type hint would be `gr.State[Config]`

Then functions can expect gr.State references that store specific type of state, aiding in type enforcement and repetitions:

def render_personal_details_tab(state: gr.State[Config]):
        @gr.render(inputs=[config_state])
        def render_name_textbox(config_value): # No type annotation required
            gr.Textbox(value=config_value.name) # `.name` is a valid instance attribute!
            # ...