Add Chatterino and OrbStack icons, sort lists

[mrala]

Description

• Add Chatterino and OrbStack icons.
• Sort list of apps in lib/app-icons.js.
• Sort list of icons in lib/components/icons.jsx.

@Jean-Tinland, could you please let me know if you would prefer leaving the original sort order? If so, I can create a PR to only add the new icons. Thanks!

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

The icons are rendering correctly.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings

[Jean-Tinland]

Thank you for your work this is much nicer that way! I wanted to sort all theses icons but it was low priority so I never taken the time to do it, thanks again!