Add DAP repl integration

[michaelPotter]

Adds an integration with nvim-dap to send selections to the dap-repl while an nvim-dap session is running.

I've been using this patch for a few weeks and this is an extremely ergonomic way to debug and inspect variables.

This integration is off by default and completely optional - if dap isn't installed, the integration is bypassed.

[nickeisenberg]

Hey sorry for the late reply. Could you explain why this is nice, I never really use dap. So this is just sends lines to that DAP repl when a session is open?

[michaelPotter]

So this is just sends lines to that DAP repl when a session is open?

Yeah pretty much! DAP lets you set debug breakpoints in your code, and has a repl where you can evaluate expressions in the scope of the breakpoint. Handy for regular old debugging, but it's especially good for exploring large data structures since it has like folds you can open/close to go up/down the structure.

This integration just streamlines the workflow for using it. It's kind of nice too as a general repl for languages like Java that don't really have one.

The implementation here... isn't fantastic. I couldn't find another way attach to an "in process" repl, but it's minimally invasive to the rest of the code.

[nickeisenberg]

Ill take a deeper look soon and test it out. Sorry, I've been busy with work recently!

[michaelPotter]

DAP itself can be kind of a pain to set up, I can send you some configs to get you going if you want? Do you use Mason?

[nickeisenberg]

I actually already have it set up for python, I just never really used it.

[nickeisenberg]

Ignore my last comment that I deleted if you saw that...

So I just test this out a bit, its pretty cool! Ill add the feature in. Thanks!