Add README and update CI workflow name

Added a comprehensive README.md documenting available workflows, usage, and setup instructions. Renamed the CI workflow and concurrency group in ci.yml for clarity.

Author: tilucasoli

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: Run Tests
+name: CI Workflow
 
 on:
   workflow_call:
@@ -24,7 +24,7 @@ on:
         required: true
 
 concurrency:
-  group: run-tests-${{ github.ref }}
+  group: ci-workflow-${{ github.ref }}
   cancel-in-progress: true
 
 jobs: