Add README mining subprotocol

protocols/v2/subprotocols/mining/README.md

@@ -0,0 +1,30 @@
+# mining_sv2
+
+[![crates.io](https://img.shields.io/crates/v/mining_sv2.svg)](https://crates.io/crates/mining_sv2)
+[![docs.rs](https://docs.rs/mining_sv2/badge.svg)](https://docs.rs/mining_sv2)
+[![rustc+](https://img.shields.io/badge/rustc-1.75.0%2B-lightgrey.svg)](https://blog.rust-lang.org/2023/12/28/Rust-1.75.0.html)
+[![license](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue.svg)](https://github.com/stratum-mining/stratum/blob/main/LICENSE.md)
+[![codecov](https://codecov.io/gh/stratum-mining/stratum/branch/main/graph/badge.svg)](https://app.codecov.io/gh/stratum-mining/stratum/tree/main/protocols%2Fv2%2Fmining_sv2)
+
+`mining_sv2` is a Rust crate that implements a set of  messages defined in the Mining protocol of Stratum V2.
+The Mining protocol enables the distribution of work to mining devices and the submission of
+proof-of-work results.
+
+For further information about the messages, please refer to [Stratum V2 documentation - Mining](https://stratumprotocol.org/specification/05-Mining-Protocol/).
+
+## Build Options
+
+This crate can be built with the following features:
+- `no_std`: Disables the standard library.
+- `with_serde`: Enables support for serialization and deserialization using Serde.
+
+**Note that `with_serde` feature flag is only used for the Message Generator, and deprecated for any
+other kind of usage. It will likely be fully deprecated in the future.**
+
+## Usage
+
+To include this crate in your project, run:
+
+```bash
+$ cargo add mining_sv2
+```