feat: add GitHub Actions workflows for code quality and automation (#2)

csharp-lint-check/README.md

@@ -0,0 +1,29 @@
+# ivuorinen/actions/csharp-lint-check
+
+## C# Lint Check
+
+### Description
+
+Runs linters like StyleCop or dotnet-format for C# code style checks.
+
+### Inputs
+
+| name             | description                        | required | default |
+| ---------------- | ---------------------------------- | -------- | ------- |
+| `dotnet-version` | <p>Version of .NET SDK to use.</p> | `false`  | `""`    |
+
+### Runs
+
+This action is a `composite` action.
+
+### Usage
+
+```yaml
+- uses: ivuorinen/actions/csharp-lint-check@main
+  with:
+    dotnet-version:
+    # Version of .NET SDK to use.
+    #
+    # Required: false
+    # Default: ""
+```