Add inputs support for Format Function fmt

[biscout42]

Description

According to the docs, format function fmt accepts expression like

{fmt(expression, formatCode)}

I have tried to use inputs as expression and it didn't work. Example:

{fmt(inputs.my_input_name, 'usd0')}

outputs unformatted value from inputs.my_input_name. In this example inputs.my_input_name was a slider:

<Slider
    title="My slider name" 
    name=my_input_name
    size=large
    defaultValue=42
    min=0
    max=1000
    step=10
    fmt='usd0'
/>

What problem would this solve?

That would allow to design pages with formatted values. One example: slider current value is not formatted (min/max are), even if add fmt property. One could output current slide value in the page text.

How should it work?

Format values from inputs.

[hughess]

A workaround is to wrap the value in Number() like so:

{fmt(Number(inputs.my_input_name), 'usd0')}