Implement registerDebugAdapterTrackerFactory

[tolusha]

Signed-off-by: Anatoliy Bazko abazko@redhat.com

What does this PR do

Add VS Code api to register DebugAdapterTrackerFactory [1]
[1] https://github.com/Microsoft/vscode/blob/master/src/vs/vscode.d.ts#L8861

Reference issue

#4804

How to test

I used my custom plugin [2] to print messages on console:

root INFO [hosted-plugin: 3553] onWillStartSession
root INFO [hosted-plugin: 3553] onWillReceiveMessage
root INFO [hosted-plugin: 3553] onWillStopSession
root INFO [hosted-plugin: 3553] onExit

[2] https://github.com/tolusha/pig-debugger-theia-plugin

[benoitf]

would be interesting to try

• https://github.com/joelday/papyrus-lang
• https://github.com/haneefdm/adv-cppdbg

which are using this function

[akosyakov]

I like how @tolusha structured the description. Maybe we can update our PR template to encourage contributors list how to test and what to expect? cc @marcdumais-work @svenefftinge

[akosyakov]

@tolusha How do you test with your extension? Could you provide steps?

I've tried to install it, but it does not recognise own generated initial config.

[tolusha]

@akosyakov
use pig-debug type

[akosyakov]

was able verify with pig extension

[akosyakov]

@a1994846931931 if you can please give it a try after it gets merged

[tolusha]

@akosyakov This PR allows to register debug adapter tracker factory only.
I am working on registration debug adapter descriptor factory and about to create another PR.
I've split the task into two different PRs