New: Add default-case-last rule (fixes #12665)

[mdjermanovic]

What is the purpose of this pull request? (put an "X" next to item)

[X] New rule #12665

Examples of incorrect code for this rule:

/*eslint default-case-last: "error"*/

switch (foo) {
    default:
        bar();
        break;
    case "a":
        baz();
        break;
}

switch (foo) {
    case 1:
        bar();
        break;
    default:
        baz();
        break;
    case 2:
        quux();
        break;
}

switch (foo) {
    case "x":
        bar();
        break;
    default:
    case "y":
        baz();
        break;
}

switch (foo) {
    default:
        break;
    case -1:
        bar();
        break;
}

switch (foo) {
  default:
    doSomethingIfNotZero();
  case 0:
    doSomethingAnyway();
}

What changes did you make? (Give an overview)

New rule: default-case-last

Is there anything you'd like reviewers to focus on?

[kaicataldo]

LGTM, thanks!