Add new icons

[AdRiley]

Pull Request Description

• right_panel
• bottom_panel
• refresh
• header1
• header2
• header3
• quote
• code
• help

Important Notes

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• [ ] The documentation has been updated, if necessary.
• [ ] Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• [ ] All code follows the Scala, Java, TypeScript, and Rust style guides. In case you are using a language not listed above, follow the Rust style guide.
• [ ] Unit tests have been written where possible.