Small Refactor to Utilize SvelteKit Routing

[alvinosh]

Description

Currently we are switching between the gallery route and the image view via svelte stores, this adds too much global state and makes it difficult to expand and add more files.

Example

Checks like this are problematic
https://github.com/ARK-Builders/ARK-Gallery/blob/c3dc213b2b04fe335262fa6e12c01d9f31cd8eb8/src/routes/%2Bpage.svelte#L177

Solution

We can add new routes to the application, such as /view?image=... or some sort of other implementation that is compatible with sveltekit and tauri
https://kit.svelte.dev/docs/routing