User Story

As a user,
while a long running shell command is in progress I want to be able to interrupt the command execution,
so that I can easily terminate operations and commands I launched by mistake.

Acceptance criteria

• There is a button to terminate current shell execution
• A `while(true) {}` in compass shell can be terminated, and stops the running of that execution
• The compass-shell is still usable after terminating a command
• The shell context is preserved