try build stability workaround

Author: ktoso

Samples/SwiftJavaExtractFFMSampleApp/ci-validate.sh

@@ -3,5 +3,7 @@
 set -x
 set -e
 
+swift build # as a workaround for building swift build from within gradle having issues on CI sometimes
+
 ./gradlew run
 ./gradlew test

Samples/SwiftJavaExtractJNISampleApp/build.gradle

@@ -102,7 +102,8 @@ def jextract = tasks.register("jextract", Exec) {
 
     workingDir = layout.projectDirectory
     commandLine "swift"
-    args("build") // since Swift targets which need to be jextract-ed have the jextract build plugin, we just need to build
+    // TODO: -v for debugging build issues...
+    args("build", "-v") // since Swift targets which need to be jextract-ed have the jextract build plugin, we just need to build
     // If we wanted to execute a specific subcommand, we can like this:
     //     args("run",/*
     //             "swift-java", "jextract",

Samples/SwiftJavaExtractJNISampleApp/ci-validate.sh

@@ -3,5 +3,7 @@
 set -x
 set -e
 
+swift build # as a workaround for building swift build from within gradle having issues on CI sometimes
+
 ./gradlew run
 ./gradlew test