workspace: add command mapping to plugin-system

[dineshUmasankar]

What it does

Fixes: #9840

With the aid of @vince-fugnitto, Added the command workspace:openConfigFile mapping in the plugin system to be able to be executed by vscode plugins.
(vscode command id) workbench.action.openWorkspaceConfigFile

How to test

To test functionality, from @vince-fugnitto ,

@dineshUmasankar to test it is quite simple, I created a plugin to test which you can use since you were having difficulty:

• https://github.com/vince-fugnitto/vscode-open-config-file/releases/download/v0.0.1/vscode-open-config-file-0.0.1.vsix

The plugin simply executes the command:

export function activate(context: vscode.ExtensionContext) {
    let disposable = vscode.commands.registerCommand('vscode-open-config-file.test', () => {
        vscode.commands.executeCommand('workbench.action.openWorkspaceConfigFile');
    });

    context.subscriptions.push(disposable);
}

The command workbench.action.openWorkspaceConfigFile is available when we start the application, and we have a multi-root workspace opened (a workspace with more than one root folder, and described as a workspace file). In vscode this plugin will successfully work, but in the theia framework we need to make sure to add the proper mapping so that it is available by the plugin.

Error (theia):

Error: Command with id 'workbench.action.openWorkspaceConfigFile' is not registered.

To test the feature you would do the following:

1. add the test plugin to the plugins/ folder
2. start the application
3. open a workspace
4. use the command add folder to workspace (to add a secondary root and create a multi-root workspace)
5. use the command test: open config file (the configuration file should open)

I confirmed it works locally with the plugin and the mapping updates:

My confirmation of it working locally with the plugin and mapping updates:

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

Signed-off-by: dineshUmasankar dinesh71uma@gmail.com

[dineshUmasankar]

I opened up a new pull request, because I had accidentally made a rebase mistake and decided to redo from scratch and properly learn standard protocol. Thank you for guiding and providing me with the resources to contribute.

[vince-fugnitto]

I confirmed that the changes work successfully 👍 Thank you for your contribution!

[msujew]

I can confirm as well that the change adresses the issue nicely.