x.crypto: add a new ascon cryptographic module, based on https://doi.org/10.6028/NIST.SP.800-232 (Lightweight Cryptography Standards for Constrained Devices) (#25260)

Author: blackshirt

vlib/x/crypto/ascon/README.md

@@ -0,0 +1,15 @@
+# ascon
+
+`ascon` is a implementation of Ascon-Based Cryptography module implemented in pure V language.
+This module was mostly based on NIST Special Publication of 800 NIST SP 800-232 document.
+Its describes an Ascon-Based Lightweight Cryptography Standards for Constrained Devices 
+thats provides Authenticated Encryption, Hash, and Extendable Output Functions.
+See the [NIST.SP.800-232 Standard](https://doi.org/10.6028/NIST.SP.800-232) for more detail.
+
+This module does not fully implements all the features availables on the document.
+Its currently implements:
+- `Ascon-Hash256`, Ascon-based hashing implementation that produces 256-bits output.
+- `Ascon-XOF128`, Ascon-based eXtendible Output Function (XOF) where the output size of 
+the hash of the message can be selected by the user.
+- `Ascon-CXOF128`, a customized XOF that allows users to specify a customization
+string and choose the output size of the message hash.