feat: add run icon and button

[ydcjeff]

Description

• Add "Run" icon and button
• Remove GitHub icon as there is a link to commit version

fix #28

Additional context

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What is the purpose of this pull request?

• [ ] Bug fix
• [x] New feature
• [ ] Other

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[DavianYang]

Suggestion for better position for button

• it's better for left position with logo, rather than existing in the middle
• https://play.golang.org/

[DavianYang]

[DavianYang]

rightmost