Adopt new auto commit characters for completion items

[jrieken]

Omnisharp-vscode can accept suggestions while also insert certain characters, like Cons will insert Console and insert a . when the dot-character is pressed. This has been "implemented" via keybindings. Mea culpa

The keybindings "implementation" has its weakness and in the meantime VS Code as an API for commit characters. In short, when creating a completion item you can assign it a set of commit characters:

item1 = new CompletionItem('Console')
item1.commitCharacters = ['.']; // no '(' because Console cannot be called

item2 = new CompletionItem('SomeMethod')
item2.commitCharacters = ['('] // can be called

// etc

[DustinCampbell]

@jrieken: Nice! Does the API tell us what character actually caused the completion item to commit? In VS, there are cases where completion can commit differently depending on what character is pressed.

[jrieken]

No, once we have what we want we don't talk back to the provider...