Implement all libsodium-net methods

[jamessantiago]

Asymmetric

libsodium method	PoSH-Sodium CmdLet
crypto_sign_keypair	New-KeyPair
crypto_sign_seed_keypair	New-KeyPair
crypto_sign	Sign-Message
crypto_sign_open	Verify-Message
crypto_sign_detached
crypto_sign_verify_detached
crypto_sign_ed25519_pk_to_curve25519	ConvertTo-CurveKey
crypto_sign_ed25519_sk_to_curve25519	ConvertTo-CurveKey
crypto_box_keypair	New-CurveKeyPair
crypto_box	Encrypt-Message
crypto_box_open	Decrypt-Message
crypto_box_detached	Encrypt-Message -File
crypto_box_open_detached	Decrypt-Message -File

Symmetric

libsodium method	PoSH-Sodium CmdLet
crypto_secretbox	Encrypt-SymmetricMessage
crypto_secretbox_open	Decrypt-SymmetricMessage
crypto_secretbox_detached	Encrypt-SymmetricMessage -File
crypto_box_open_detached	Decrypt-SymmetricMessage -File
crypto_onetimeauth	Sign-OneTime
crypto_onetimeauth_verify	Verify-OneTime
crypto_auth	Sign-SymmetricMessage
crypto_auth_verify	Verify-SymmetricMessage
crypto_auth_hmacsha256	Sign-SymmetricMessage -HashType HmacSha256
crypto_auth_hmacsha256_verify	Verify-SymmetricMessage -HashType HmacSha256
crypto_auth_hmacsha512	Sign-SymmetricMessage -HashType HmacSha512
crypto_auth_hmacsha512_verify	Verify-SymmetricMessage -HashType HmacSha512
crypto_aead_chacha20poly1305_encrypt
crypto_aead_chacha20poly1305_decrypt
crypto_stream_xor	Encrypt/Decrypt-SymmetricMessage -Type XSalsa20
crypto_stream_chacha20_xor	Encrypt/Decrypt-SymmetricMessage -Type Cacha20

Hashing

crypto_hash
crypto_shorthash
crypto_generichash_blake2b_salt_personal
crypto_pwhash_scryptsalsa208sha256_str
crypto_pwhash_scryptsalsa208sha256_str_verify
crypto_pwhash_scryptsalsa208sha256

Other

sodium_version_string
randombytes_buf
crypto_scalarmult
crypto_scalarmult_base

Utilities and Helper

sodium_hex2bin
sodium_bin2hex