feat: @modrinth/api-client

[IMB11]

Considerations:

• Do we want to abstract around useAsyncData, or plainly just provide an abstract wrapper around ofetch, $fetch and fetch? If we did the latter we'd get something like this on the nuxt frontend;

const { data: exampleData } = useAsyncData(async () => await apiClient.module.doSomething())

Rather than

const { data: exampleData } = await apiClient.module.doSomething();

It might be cleaner to just provide the abstract wrapper around ofetch etc.

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PR is very rough vibecoded draft until we figure out the best structure for this.