Resolve "Illustration > Update snippets_empty"

Purpose

Based on #362 (closed), https://gitlab.com/gitlab-org/gitlab/-/issues/358587 issue update name and style of snippets_empty illustration.

This illustration is currently only used on the snippets page. However, it could also be used on the profile page. There are two types of contexts in which it could be used:

• Your snippets. You can add new one
• Other's snippets. You can't add a new one

I suggest using a universal illustration with the same metaphor as the outdated one.

Screenshots

before	after

Checklist

For a new icon and/or illustration:

• Link to related design issue: #362 (closed)
• If this adds an icon ensure that it follows the new icon checklists.
• If this adds an illustration ensure that it follows the new illustration checklists.

For third-party trademarks:

• If this adds or updates an icon or illustration that includes a third-party trademark, ensure that it follows the process for adding third-party trademarks to GitLab.

Closes #362 (closed)