Add support for repl about dsq

[Ghibranalj]

How would you like the behaviour to be?. like how to exit and stuff.

[eatonphil]

Control-D to exit for now.

And have dsq > be the prompt for each line

[eatonphil]

When you're in interactive mode the pretty flag should probably also be turned on automatically

[Ghibranalj]

How should the test be written?

[eatonphil]

Hmm I'm OK with there not being tests for just the interactive part for now.

[eatonphil]

Oh yeah I realize now you can't just wrap lines 469-503 in a loop. But you can pull them out into a runQuery helper and then call that helper within a repl loop if interactive mode is on

[Ghibranalj]

Okay on it

[Ghibranalj]

Are you comfortable with adding a dependency for reading the input.

I was able to implement basic REPL by using the built in bufio package but this doesnt support moving the cursor around with the arrow keys.

[eatonphil]

Yup, I mentioned a suggested dependency in the original message for this issue