Migrate source and example directories to lowercase

Renamed all 'Src' and 'Examples' directories to 'src' and 'examples' for consistency and to follow common directory naming conventions. Updated GitHub Actions workflows to use the new lowercase paths and upgraded actions/checkout and actions/setup-dotnet to v5.

Author: tinohager

.github/workflows/build-release.yml

@@ -11,9 +11,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Setup .NET 8.0
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 8.0.x
     - name: Extract Version from tag
@@ -24,22 +24,22 @@ jobs:
           const version = context.ref.replace('refs/tags/', '');
           return version.slice(1);
     - name: Change Package Version
-      working-directory: ./Src
+      working-directory: ./src
       run: |
         sed -i -e "s/<Version>[a-zA-Z0-9.-]*<\/Version>/<Version>${{ steps.tag.outputs.result }}<\/Version>/g" SmtpServer/SmtpServer.csproj
     - name: Restore dependencies
-      working-directory: ./Src
+      working-directory: ./src
       run: dotnet restore
     - name: Build
-      working-directory: ./Src
+      working-directory: ./src
       run: dotnet build --configuration Release --no-restore
     - name: Test
-      working-directory: ./Src
+      working-directory: ./src
       run: |
         dotnet test --configuration Release --no-restore --no-build --verbosity normal
     - name: Build project and generate NuGet package
       run: |
-        dotnet pack --configuration Release --output $GITHUB_WORKSPACE/out Src/SmtpServer/SmtpServer.csproj
+        dotnet pack --configuration Release --output $GITHUB_WORKSPACE/out src/SmtpServer/SmtpServer.csproj
     - name: Push NuGet package
       run: |
         cd $GITHUB_WORKSPACE/out

.github/workflows/build.yml

@@ -4,12 +4,12 @@ on:
   workflow_dispatch: # Allow running the workflow manually from the GitHub UI
   push:
     paths:
-    - 'Src/**'
+    - 'src/**'
     - '.github/workflows/**'
     branches: [ master ]
   pull_request:
     paths:
-    - 'Src/**'
+    - 'src/**'
     - '.github/workflows/**'
 
 jobs:
@@ -22,18 +22,18 @@ jobs:
       #packages: write
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Setup .NET 8.0
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 8.0.x
     - name: Restore dependencies
-      working-directory: ./Src
+      working-directory: ./src
       run: dotnet restore
     - name: Build
-      working-directory: ./Src
+      working-directory: ./src
       run: dotnet build --configuration Release --no-restore
     - name: Test
-      working-directory: ./Src
+      working-directory: ./src
       run: |
         dotnet test --configuration Release --no-restore --no-build --verbosity normal