docs: Add readme to the project

README.md

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+# Randomx - Rust
+
+RandomX is a proof-of-work (PoW) algorithm that is optimized for general-purpose CPUs. RandomX uses random code execution (hence the name) together with several memory-hard techniques to minimize the efficiency advantage of specialized hardware.
+
+This is a rust build of the current Randomx algorithm
+
+## Build steps
+
+To build the project execute the following line in the terminal:
+
+```sh
+cargo build
+```
+
+## What was built
+
+The rust library of the RandomX algorithm