ci: add NuGet package caching to build-and-test.yml

Signed-off-by: Kenny Pflug <kenny.pflug@live.de>

Author: feO2x

.github/workflows/build-and-test.yml

@@ -16,6 +16,13 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: 8.0.x
+      - name: Cache NuGet packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.nuget/packages
+          key: nuget-${{ runner.os }}-${{ hashFiles('**/packages.lock.json') }}
+          restore-keys: |
+            nuget-${{ runner.os }}-
       - name: Restore dependencies
         run: dotnet restore ./Light.TemporaryStreams.sln
       - name: Build