[Feature request] Add a non-interactive mode or support for 'expect' program

[mcastillof]

I recently found your program and it works awesome, but I would also love to make a bash script that could use or interact with it.

Maybe allow arguments like:

./duckduckgo-chat-cli_v1.2.2_linux_amd64 -prompt="Hello"
Hello, how are you?

./duckduckgo-chat-cli_v1.2.2_linux_amd64 -model="gpt-4o-mini" -prompt="Hello"
Hi, how can I assist you today?

Another way could be add support to interacting with 'expect', something like:

#!/usr/bin/expect -f

set timeout -1

spawn ./duckduckgo-chat-cli_v1.2.2_linux_amd64

# Esperar prompt
expect "You: "

# Enviar texto
send "Hello\r"

# Capturar respuesta entre prompts
expect {
    -re {gpt-4o-mini: (.*)\r?\nYou: } {
        set respuesta $expect_out(1,string)
        puts "RESPUESTA CAPTURADA:"
        puts $respuesta
    }
}

ChatGPT said something like if it was a GO program it was needed to remove TUI mode, and force reading from stdin. I have never done programming in GO, so I don't know what is that TUI mode, but reading from stdin make sense to allow interaction with 'expect'.