Improve format and functionality of the resource tooltips

We want to offer direct copy-commands to our existing tooltips:

But need to determine where those should be placed. Some ideas:
- `📋 key: value`
- `key: value 📋`
- markdown table format like:

| Key | Value | Copy Value |
|--------|--------|--------|
| `key` | `value` | 📋 |

This issue is for tracking general UI improvements for the (CCloud and local) resource-specific tooltips.