Move config to lazy_lock and into own crate

[DaniD3v]

Please take a look at the LazyLock docs docs first, because they're a relatively new feature and a few people in the discord confused it with something else.

TL;DR it's basically lazy_static but in std.

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Moving the config to LazyLock has a few advantages:

• easy access from everywhere. No need to pass the config through some functions.
  Just write BASIC_CONFIG.<config option> and you're good.
• It's static so you can take &'static borrows
• The performance of a static is probably better than passing references everywhere
• There is barely any overhead on LazyLock once the config is initialized

Downsides:

• We need to move some stuff into pumpkin-core if we want to access it from the config and whatever crate we're modifying.
• It's static so we can't modify the config variable.
• MSRV

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• It's static so we can't modify the config variable.

This was one of the main points why people were LazyLock,
however I don't think that's a problem for this specific case of storing the config because

• We can't write to the config anyways (Think immutable linux distros + user comments)
• The config field should not be used to store data that is different from the data in the actual config.
• I don't think automatically reloading the config on changes is a good idea,
  considering the servers startup time and emphasis on performance

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This PR would make it significantly easier for me to write the superflat WorldGen config.

That's because I'd have to pass the config through ~4 methods to get it to the constructor of the worldgen +
I'd need to change the GeneratorInit trait to take a seed and the config.

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All of the commits compile individually and were checked with

cargo clippy
cargo build
cargo check --release
cargo fmt --check

[Snowiiii]

thank you @DaniD3v