Fix error with tests - Make the vista libs a public dependency

CMakeLists.txt

@@ -46,7 +46,8 @@ add_subdirectory ("include")
 add_subdirectory ("src")
 
 target_link_libraries (
-	${PROJECT_NAME} PRIVATE SndFile::sndfile SampleRate::samplerate Spline::spline vista::vista_base vista::vista_tools
+	${PROJECT_NAME} PRIVATE SndFile::sndfile SampleRate::samplerate Spline::spline 
+	PUBLIC vista::vista_base vista::vista_tools
 )
 
 if (ITA_BASE_WITH_REGULAR_EXPRESSIONS)