FeatReq: Define JSON schema for command inputs

[jakefrommars64]

Is your feature request related to a problem? Please describe.
n/a

Describe the solution you'd like
Fusion 360 Add-Ins are separated into separate commands located in separate directories within the root/commands/ directory. Within the entry.py file in each command directory in the function command_created is where the definitions for the command inputs are defined. I would like to create a JSON schema that allows easier definition and customization of the command inputs.

For example, the sample commandDialog sample inlcludes the following sample command inputs:

def command_created(args: adsk.core.CommandCreatedEventArgs):

    # https://help.autodesk.com/view/fusion360/ENU/?contextId=CommandInputs
    inputs = args.command.commandInputs

    # Create a simple text box input.
    inputs.addTextBoxCommandInput("text_box_1", "Some Text", "Enter some text.", 1, False)
    
    # Create a value input field and set the default using 1 unit of the default length unit.
    defaultLengthUnits = app.activeProduct.unitsManager.defaultLengthUnits
    default_value = adsk.core.ValueInput.createByString("1")
    inputs.addValueInput("value_input_1", "Some Value", defaultLengthUnits, default_value)

To implement my idea, the command inputs would instead be defined in a schema file:

{
    "sampleCommandDialog": {
        "inputs": {
            "textBox": {
                "id": "text_box_1",
                "name": "Some Text",
                "formattedText": "Enter some text.",
                "numRows": 1,
                "isReadOnly": false
            },
            "valueInput": {
                "id": "value_input_1",
                "name": "Some Value",
                "initialValue": "1"
            }
        }
    }
}

The python code would be replace with this:

def command_created(args: adsk.core.CommandCreatedEventArgs):

    # https://help.autodesk.com/view/fusion360/ENU/?contextId=CommandInputs
    inputs = args.command.commandInputs
    
    jsonSchemaInterpretingFunction("command_inputs.json", inputs)

The function jsonSchemaInterpretingFunction would read the schema and automatically add the command inputs defined in the schema to the inputs variable in the command_created function.

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Additional context
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