Publish to OpenVSX

[ItsDrike]

Arch Linux (Linux based operating system distribution) has decided to switch the marketplace for extensions from the MS Visual Studio Marketplace to OpenVSX in this commit.

Here are some more details about OpenVSX, its goal, and why it was created

For that reason, I can't use your extension anymore, could you publish on OpenVSX too?
(It's typically just a matter of running npx ovsx publish you can also check the full guide for publishing)

[bjornhansen]

I'd also love to see this happen! As a Gitpod user, the current SQL toolset is a bit limited.

[mtxr]

Dup #697