[fpc-pascal] Debug-Adapter-Protocol support for fpDebug

[Ryan Joseph]

> On Apr 24, 2020, at 3:10 AM, Joost van der Sluis <joost at cnoc.nl> wrote:
> 
> I'm working on the support of the debug-adapter-protocol for fpDebug. It's quite easy to implement, as there already is a json-based tcp/ip interface. (https://microsoft.github.io/debug-adapter-protocol)

I use the debugger in VSCode and while LLDB works pretty well, short strings are always a problem. I've never used fpDebug though so I can't say if it's better than LLDB (I thought it was no very mature).

Regards,
	Ryan Joseph