Complete terminal(pseudoTerminal) api

[AndrienkoAleksandr]

Description

VSCode has new pseudo-terminal api https://github.com/microsoft/vscode/blob/master/src/vs/vscode.d.ts#L7518

We need implement it.

OS and Theia version:

Diagnostics:

[akosyakov]

Are there known VS Code samples, extensions to test again?

[AndrienkoAleksandr]

Are there known VS Code samples, extensions to test again?

I will take a look.

[PEZ]

I am about to switch to this for Calva (a Clojure extension for VS Code). Here's the PR: BetterThanTomorrow/calva#654

It's a bit ironic, because the reason I started with it was to see if it would help Calva start working in Theia. Something that is partly do to Theia loosing track of the terminal used for hosting the orphaned Task I am currently using.

I elaborated some more on how I use the API here: https://community.theia-ide.org/t/can-i-use-vscode-extensionterminal-in-theia/24

Also throwing in some more of my struggles here: https://community.gitpod.io/t/is-there-an-easy-way-to-debug-a-vscode-extension-inside-gitpod/596/68?u=pez (I wanted to keep reporting in that thread, but am to new to the community to be allowed to 😄 ).

[akosyakov]

@PEZ I don't think anyone is looking into it, right now. PRs are welcomed.

[datou0412]

this sample can be used to test extension-terminal-sample

[tsmaeder]

Closing in favor of #12074