Port `/anime/explore` page

[stabldev]

Port from:
https://github.com/coreproject-moe/CoreProject/blob/4f23d3031843cafe7cdd613acfcd5f456a36ccb6/backend/django_core/static_src/components/page/explore/Index.svelte

[stabldev]

@meowsocute can I assign this to you?

[meowsocute]

as you please my highness, 🥱

[baseplate-admin]

highness

I see what you did here. @moonlitgrace you are dead.

[stabldev]

I see what you did here. @moonlitgrace you are dead.

what'd i do? and you can also call me that (gracefully)

[meowsocute]

#275