Merge in the Release-Plz Setup (#6)

This Pull Request will setup the process of Automatic release of everything in the workspace.

Adds in a README.md file.

---------

Co-authored-by: ci-bot <bot@email.melfely.com>
Reviewed-on: #6
Co-authored-by: Melfely <bug362@outlook.com>

example_lib/CHANGELOG.md

@@ -0,0 +1,14 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.1.1](https://gitea.melfely.com/melfely/rust_workflow_template/compare/example_lib-v0.1.0...example_lib-v0.1.1) - 2026-09-11
+
+### Added
+
+- added pub fn sub()

example_lib/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "example_lib"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2024"
 
 [dependencies]

example_lib/src/lib.rs

@@ -2,6 +2,10 @@ pub fn add(left: u64, right: u64) -> u64 {
     left + right
 }
 
+pub fn sub(left: u64, right: u64) -> u64 {
+    left - right
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -10,5 +14,7 @@ mod tests {
     fn it_works() {
         let result = add(2, 2);
         assert_eq!(result, 4);
+        let result = sub(2, 2);
+        assert_eq!(result, 0);
     }
 }