simplify plugin unzipping log info to one line

[kpge]

What it does

fix: #6138

How to test

Simplify plugin unzipping log info to one line :

• create plugins folder under Theia repo folder
• Google for an extension (*.vsix file) and download it to the plugins folder
• start Theia browser example
• check the log in terminal or console

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

[lmcbout]

Looks good
Tested with a .vsix extension and only a line on the console, not the full JSON data structure

[vince-fugnitto]

@akosyakov do you know how a plugin can fail resolving or fail to load?
I'd like to test in that case if we get a meaningful message.

Also, I don't know if we agreed on what format and params should be present when logging the unzipping of plugins, but is it sufficient to display the path, and copy path only?

[akosyakov]

@vince-fugnitto try to point to something what is no zip file, but has vsix extension

Having a source and target paths is enough to me, as it is done in the PR.

[lmcbout]

Question, I tried to install in VSCode the following plugin I get the following error:
Unable to install 'jabacchetta.vscode-essentials' extension because it is not compatible with the current version of VS Code (version 1.37.1).

but if I unzip it in Theia, I don't get an indication whether the plugin works or not ?
Should we have an indication if the plugin is usable or not ?

[akosyakov]

You should be able to see all deployed plugins in Plugins view. If it is not there it is an indicator. For any plugin which is there you will receive an error notification if it cannot be loaded or activated.

[benoitf]

@lmcbout AFAIK the new default for VS Code version is 1.38
you can override the check with VSCODE_API_VERSION env variable where you run theia.

#6112

[kpge]

I'd like to test in that case if we get a meaningful message.

@vince-fugnitto I didn't change the error log in this PR, and it will show the failed log like this:

[akosyakov]

@kpge please squash suggestions commit

[kpge]

@kpge please squash suggestions commit

@akosyakov ok, I have rebased it.