Publish artifacts for CI builds (#1533)

Co-authored-by: Joao Matos <joao@tritao.eu>

.github/workflows/main.yml

@@ -51,3 +51,13 @@ jobs:
       - name: Test
         shell: bash
         run: build/test.sh -platform $PLATFORM
+
+      - name: 'Upload Artifact'
+        uses: actions/upload-artifact@v2
+        with:
+          name: cppsharp-${{ matrix.config.os }}-${{ matrix.config.platform }}-${{ matrix.config.cc }}
+          path: |
+            bin/**/CppSharp*
+            bin/**/Std-symbols*
+            bin/**/lib/**
+            include/**/*.h