Feat(launcher): Organize everything

[colonthreeing]

This PR changes nothing functionally, but organizes file structure.

Summary of changes

• moved all pages (home, settings, etc) to the launcher/src/pages/ directory
• made the navbar/sidebar into a component in the launcher/src/components directory
• moved most reactive values to launcher/src/lib/state.ts and allowed for using const {} = useAppStateContext(); to get values
• moved most reused types into launcher/src/types.ts

again, this PR changes nothing; almost all of the code is identical, just moved.