Use root element for XMLClientSettings

[dhuebner]

I'm about to add support for the lsp4xml in theia. In theia, when sending settings to a server, one or more roots can be selected (in my case it's xml). Doing so, all the xml.* setting will be send to the server wrapped by the root object.

"xml": {
     "logs":{"client":true},
     "format":{"enabled":true,"spaceBeforeEmptyCloseTag":true},
     "trace":{"server":"off"}
    }

The idea behind that is that the server may later rely on other client settings e.g. http to get the proxy settings, than you would just add a new xml sibling http

Would it be possible to load the setting with a xml prefix?
Does it make sense?

[dhuebner]

Related code in the vscode extension:

https://github.com/redhat-developer/vscode-xml/blob/d198be337e588f8217c3e9108cab21b3d74912e8/src/extension.ts#L95

[angelozerr]

@fbricon what do you think about that?

[fbricon]

@angelozerr I'm fine with that. That was actually what I expected from the server initially.