Add issue templates

[poppinlp]

We may add some Github issue templates such as bug report template and feature request template.

The bug report template is to collect some basic information from submitting a new issue. This may be useful for analysis and reproduce the problem. Here are what I thought of:

• operation system
• extension settings
• nodejs version
• vscode version(or is insider version)
• extension version(although there's an auto upgrade)

The feature request template is to make the request clear. It may include:

• What's the situation right now?
• What do you expect?
• Would you like to submit a PR for it? If so, what's your solution?

[jdneo]

LGTM.

So would you like to submit a PR for it? 😀

[jdneo]

Resolved. @poppinlp Nice job!