[SR-10809] Honour ClientCapabilities for code completion snippets

[benlangmuir]

Previous ID	SR-10809
Radar	None
Original Reporter	@benlangmuir
Type	Bug
Status	Resolved
Resolution	Done

Additional Detail from JIRA

Votes	0
Component/s	SourceKit-LSP
Labels	Bug, StarterBug
Assignee	rockbruno (JIRA)
Priority	Medium

md5: 9dd1bf0b87599da59d5dbf4174138ac3

Issue Description:

We currently always return code-completion items with snippets. However, this is supposed to be configurable by the client/editor using

TextDocumentClientCapabilities
> completion
> completionItem
> snippetSupport

https://microsoft.github.io/language-server-protocol/specification#initialize

We should honour that capability, and when the editor does not support snippets, strip them out before returning the completion.

[swift-ci]

Comment by Bruno Rocha (JIRA)

Submitted at #115

[belkadan]

Since this got merged, feel free to mark it as Resolved!