added icons, small icon used for everything

[Puggernauts]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. Added small and big icon png and svg files. Ran "npm run tauri icon ./public/LittlePKIcon.png" and tauri will use the small icon.

Does this fix an existing issue?

Fixes # (issue)

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have checked my code and corrected any misspellings
• [x] I will put an appropriate label on my pull request

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