Automatically add add-opens if Java version >= 9

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

launcher/java/JavaVersion.cpp

@@ -50,11 +50,11 @@ QString JavaVersion::toString()
 
 bool JavaVersion::requiresPermGen()
 {
-    if(m_parseable)
-    {
-        return m_major < 8;
-    }
-    return true;
+    return !m_parseable || m_major < 8;
+}
+
+bool JavaVersion::isModular() {
+    return m_parseable && m_major >= 9;
 }
 
 bool JavaVersion::operator<(const JavaVersion &rhs)