Adding intent to the AppIntentsExtension

I have added an "App Intents Extension" target to my main application in macOS. This generated the below two files:

TWAppIntent.swift

import AppIntents

struct TWAppIntent: AppIntent {
    static var title: LocalizedStringResource = "TWAppIntent"
    static var parameterSummary: some ParameterSummary {
        Summary("Get information on \(\.$TWType)")
    }
    
    // we can have multiple parameter of diff types
    @Parameter(title: "TWType")
     var TWType: String
    
    func perform() async throws -> some IntentResult {
                
        return .result(dialog: "Executed TWAppIntent.")
    }
}

TWAppIntentExtension.swift

import AppIntents

@main
struct TWAppIntentExtension: AppIntentsExtension {
    
}

I m able to build the extension target and I my intent action is available in the shortcuts app. However, on launching a shortcut with the above created intent action. I m getting the below popups:

From what I understand, I m getting this error because I have not added my 'TWAppIntent' to the TWAppIntentExtension.swift file which is the entry point for the extension, but I could not find any documentation around how to add it. Can someone help on how to do it or Is there something else that I m doing wrong?