Cleanup lv2export, split definitions into common file

Signed-off-by: falkTX <falktx@falktx.com>

lv2export/lv2plugin.hpp

@@ -0,0 +1,47 @@
+/*
+ * DISTRHO Cardinal Plugin
+ * Copyright (C) 2021-2022 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the LICENSE file.
+ */
+
+#pragma once
+
+#ifndef PLUGIN_BRAND
+# error PLUGIN_BRAND undefined
+#endif
+
+#ifndef PLUGIN_LABEL
+# error PLUGIN_LABEL undefined
+#endif
+
+#ifndef PLUGIN_MODEL
+# error PLUGIN_MODEL undefined
+#endif
+
+#ifndef PLUGIN_CV_INPUTS
+# error PLUGIN_CV_INPUTS undefined
+#endif
+
+#ifndef PLUGIN_CV_OUTPUTS
+# error PLUGIN_CV_OUTPUTS undefined
+#endif
+
+enum PortType {
+    Audio = 0,
+    Bi = 1,
+    Uni = 2,
+};
+
+static constexpr const PortType kCvInputs[] = PLUGIN_CV_INPUTS;
+static constexpr const PortType kCvOutputs[] = PLUGIN_CV_OUTPUTS;