add tencent serverless logo

Purpose

Add a tencent serverless logo to create a tencent serverless project template into built-in project templates, see details in this issue gitlab-jh/gitlab#225 (closed), and this MR gitlab!71458 (merged)

Screenshots

Checklist

For a new icon and/or illustration:

• 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.