Move value limitations away from type_setter #1155

Job	Run time
Clippy	48s
Rustfmt	15s
Test (MSRV)	1m 16s
Build docs	1m 18s
Test (stable)	2m 2s
Test (beta)	2m 11s
Test (nightly)	1m 43s
Test (macOS)	1m 33s
Test (Windows)	4m 21s
Test (no features)	1m 14s
Test (all features - simdjson, cargo test --all-features --lib --tests --examples)	1m 21s
Test (native TLS, cargo test --all-features --features serenity/native_tls_backend --lib --tests ...	1m 24s
	19m 26s

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