add typed function declaration snippet

[azr]

Hello there !

vscode-go made me switch to vscode from sublime text ! So nice one and thanks !

And I event recommend it ! Could you imagine ? a microsoft product !

Anyways, I'm proposing this snippet because I used it a lot in sublime text.

In fact the GoSublime snippet is a little bit better because it will propose a list with $1 prepopulated with known local types, which is awesome.

cheers !

[msftclas]

Hi @azr, I'm your friendly neighborhood Microsoft Pull Request Bot (You can call me MSBOT). Thanks for your contribution!

This seems like a small (but important) contribution, so no Contribution License Agreement is required at this point. Real humans will now evaluate your PR.

TTYL, MSBOT;

[lukehoban]

Thanks for this.

The feature you really want here is being tracked in #168. I'd love to get that added.

I'm not as sure about the addition in this PR:

1. I'm not sure funct is the right name. What was your reasoning for the name? I suspect discoverability would be low and thus this wouldn't get used much.
2. More importantly, feels like this shouldn't need a name. If Method Suggestion #168 was implemented, the completion list could just include generated snippets.

[azr]

1/ to create a method you'd type func so the autocompletion would trigger.

2/ if someone's on #168 I think we could just close this pr. I'd love it too !

thanks :)