fix(cli-repl): ctrl-c terminates running DB operations MONGOSH-640

[rose-m]

Still a work in progress - but already implements a large deal of CTRL-C handling. The process is as follows:

1. CTRL-C is caught for an async execution
2. All MongoClients are closed
3. We print the "Error: Asynchronous execution was interrupted" message (no prompt)
4. We wait until the async execution finishes (since it is running in the background CTRL-C doesn't kill it) and silently catch any errors
5. We reconnect all MongoClients
6. The prompt returns and allows the user to enter new commands

The following needs to be completed:

• Adapt the API decorators to check for interruption and immediately throw an internal error
• Adapt the async-writer to ensure that the internal interrupt errors are not caught by user code

And here a quick demo how it looks like for a simple command:

[addaleax]

Looks great so far!

[addaleax]

Looks great so far :)