Add ReSharper code inspection (#10)

And cancel workflows in progress to avoid having multiple of the same
workflow running

.github/workflows/codeql.yml

@@ -1,4 +1,7 @@
 name: "CodeQL"
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 on:
   push:
@@ -10,7 +13,7 @@ on:
 
 jobs:
   analyze:
-    name: Analyze
+    name: Analyze code
     runs-on: ubuntu-latest
     permissions:
       actions: read
@@ -26,19 +29,16 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
-    # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         queries: +security-extended,security-and-quality
 
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually
-    - name: Autobuild
+    - name: Build solution
       uses: github/codeql-action/autobuild@v2
 
-    - name: Perform CodeQL Analysis
+    - name: Perform CodeQL analysis
       uses: github/codeql-action/analyze@v2
       with:
         category: "/language:${{matrix.language}}"

.github/workflows/resharper.yml

@@ -0,0 +1,36 @@
+name: "ReSharper"
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  inspect-code:
+    name: Inspect code
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Restore dependencies and tools
+      run: dotnet restore
+
+    - name: ReSharper CLI InspectCode
+      uses: muno92/resharper_inspectcode@1.6.0
+      with:
+        solutionPath: ./Boyfriend-CSharp.sln
+        ignoreIssueType: InvertIf
+        solutionWideAnalysis: true