[button] add tertiary and ghost variants for danger button

[laurenmrice]

• Add tertiary and ghost variants for the danger button.
• This also renames the danger token to danger-01 and adds another token for danger-02

• Ref original issues:
  Need danger button alternatives carbon#4945
  [danger button] add tertiary and ghost variants carbon#5610

---

• In code (Merged PR: feat(button): add tertiary and ghost danger buttons carbon#7087)

Tertiary danger button (all sizes)

• White theme
• Gray 10 theme
• Gray 90 theme
• Gray 100 theme

Ghost danger button (all sizes)

• White theme
• Gray 10 theme
• Gray 90 theme
• Gray 100 theme

[mariuszmickiewicz]

• Renamed danger to danger-01
• Added danger-02 to layer styles

[stale]

We've marked this issue as stale because there hasn't been any activity for a couple of weeks. If there's no further activity on this issue in the next three days then we'll close it. You can keep the conversation going with just a short comment. Thanks for your contributions.

[laurenmrice]

Added! Will be in the next update 🎉