Support SourceMaps for dart-sass-embedded

Author: larsgrefer

embedded-sass-plugin/src/main/java/io/freefair/gradle/plugins/sass/SassCompile.java

@@ -68,6 +68,7 @@ public void compileSass() throws IOException {
         try (SassCompiler compiler = SassCompilerFactory.bundled()) {
             compiler.setOutputStyle(getOutputStyle().getOrNull());
             compiler.setGenerateSourceMaps(sourceMapEnabled.getOrElse(true));
+            compiler.setSourceMapIncludeSources(sourceMapContents.getOrElse(false));
 
             compiler.setLoggingHandler(new Slf4jLoggingHandler(getLogger()));
             compiler.getLoadPaths().addAll(getIncludePaths().getFiles());