Move the contents of the evrf/ folder to the crypto/ folder

It was justified when it had several libraries, which it no longer does thanks
to the upstreaming with monero-oxide.

crypto/secq256k1/Cargo.toml

@@ -0,0 +1,40 @@
+[package]
+name = "secq256k1"
+version = "0.1.0"
+description = "An implementation of the curve secp256k1 cycles with"
+license = "MIT"
+repository = "https://github.com/serai-dex/serai/tree/develop/crypto/secq256k1"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+keywords = ["secp256k1", "secq256k1", "group"]
+edition = "2021"
+rust-version = "1.86"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+hex-literal = { version = "0.4", default-features = false }
+
+std-shims = { version = "0.1", path = "../../common/std-shims", default-features = false, optional = true }
+
+generic-array = { version = "1", default-features = false }
+k256 = { version = "0.13", default-features = false, features = ["arithmetic"] }
+prime-field = { path = "../prime-field", default-features = false }
+short-weierstrass = { path = "../short-weierstrass", default-features = false }
+
+blake2 = { version = "0.10", default-features = false }
+ciphersuite = { path = "../ciphersuite", version = "0.4", default-features = false }
+generalized-bulletproofs-ec-gadgets = { git = "https://github.com/monero-oxide/monero-oxide", rev = "a6f8797007e768488568b821435cf5006517a962", default-features = false, optional = true }
+
+[dev-dependencies]
+hex = "0.4"
+
+rand_core = { version = "0.6", features = ["std"] }
+
+ff-group-tests = { path = "../ff-group-tests" }
+
+[features]
+alloc = ["std-shims", "generic-array/alloc", "k256/alloc", "prime-field/alloc", "short-weierstrass/alloc", "ciphersuite/alloc", "generalized-bulletproofs-ec-gadgets"]
+std = ["alloc", "std-shims/std", "k256/std", "prime-field/std", "blake2/std", "ciphersuite/std", "generalized-bulletproofs-ec-gadgets/std"]
+default = ["std"]