Add lint workflow

Author: mbcrawfo

.github/workflows/ci.yml

@@ -1,10 +1,6 @@
 name: Build and Test
 
-on:
-  push:
-    branches: ["main"]
-  pull_request:
-    branches: ["main"]
+on: [push, pull_request]
 
 jobs:
   build:

.github/workflows/lint.yml

@@ -0,0 +1,22 @@
+name: Linter Checks
+
+on: [push, pull_request]
+
+jobs:
+  check-formatting:
+    runs-on: "ubuntu-latest"
+
+    steps:
+      - name: Clone the repo
+        uses: actions/checkout@v4
+
+      - name: Set up .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 9.0.x
+
+      - name: Restore tools
+        run: dotnet tool restore
+
+      - name: Run CSharpier
+        run: dotnet csharpier --check .