Merge branch '202-add-logo-for-gitea' into 'main'

Resolve "Add logo for gitea"

Closes #202

See merge request !179

frontend/public/custom/assets/gitea.svg

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frontend/public/custom/markdown/gitea.md

+---
+title: 'Gitea'
+tileExcerpt: 'All-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD'
+---
+
+## Introduction
+
+> [Gitea](https://github.com/go-gitea/gitea): Painless self-hosted all-in-one software
+> development service, including Git hosting, code review, team collaboration,
+> package registry and CI/CD.