Add Attach remote option

[cousine]

Add "Attach remote" as a default option as well as an input to enter the connection address

[leoluz]

@cousine Hi! Not sure I understand what is the advantage of having the dlv uri and the remote path defined in runtime instead of just having a dedicated user configuration with the values provided declaratively. Would you please elaborate why this is a good feature to have?

[cousine]

@leoluz the main use case I had is that we have several executables in the same project, and it was more convenient to be able to on-the fly connect to a remote session especially that I use the remote session occasionally for debugging within a container

[leoluz]

@cousine There is another on-going PR (#78) that I think will address your use-case.
Can you please take a look and confirm?
tks!

[cousine]

@leoluz thanks for sharing! looks like it does solve the issue, but the caveat here is the introduction of a new config format (vscode launch), tbh thats not ideal as it means I litter my repo with several config files just to configure my nvim env.

Not sure if anyone else would have this exact nit.