Update README.md

Author: antoniopereirabuilds

OutSystems.NetChecksumUtils/README.md

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+# OutSystems.Extension.NetChecksumUtils
+![Tests Status](https://github.com/Redeagle48/OutSystems.Extension.NetChecksumUtils/actions/workflows/test.yml/badge.svg)
+A high-performance OutSystems Extension using the .Net System.Security.Cryptography DLL to provide robust checksum generation and verification for strings and binary data. This extension simplifies data integrity checks by wrapping standard .NET cryptographic providers into easy-to-use Server Actions. This implementation replaces the obsolete "ComputeHash" OutSystems built-in action. 
+
+🚀 Features
+Multi-Algorithm Support: Generate hashes using MD5, SHA256, SHA3_256, and SHA512.
+
+🛠 Actions Included
+This extension exposes the following Server Actions within Service Studio:
+
+## ComputeHash
+Generates a checksum for a given input based on the specified algorithm.
+
+Input: Value (Text/Binary), Algorithm (Text: MD5, SHA256, etc.)
+
+Output: Hash (Text)
+
+## VerifyHash
+Compares a plain value against an existing hash to check for integrity.
+
+Input: Value (Text/Binary), HashToVerify (Text), Algorithm (Text: MD5, SHA256, etc.)
+
+Output: IsValid (Boolean)