Branch destructure after function

[kaizhu256]

• jslint - Allow destructuring-assignment after function-definition.

This PR relaxes warning about [] operator appearing after a function definition, due to it now being legal-syntax for destructuring-assignment, e.g.

let aa;
let bb;
function foo() {
    return [1, 2];
}
[aa, bb] = foo();  // jslint previously would warn here

this PR will additionally:

• ci - Replace npm-package used to auto-build vscode-plugin, vsce to @vscode/vsce.