Clear New Cmd

/clear aka /new Command

1. We will add a new command /clear aka /new to the REPL. We have the following requirements:

2. Reset the conversation history

3. Clean the terminal screen and start a new session
4. Show the KEEN CODE logo and the welcome message that we already show when the REPL starts
5. Update the context status accordingly
6. Show a brief message ":tick: New session started"

Do you have any other suggestions for the requirements?

1. Ok let's implement it.