tests: add framework for plannerShared test

Add TestPlannerShared test (cpp + h)

Signed-off-by: Jan Iversen <jan@casacondor.com>

tests/testplannershared.h

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef TESTPLANNERSHARED_H
+#define TESTPLANNERSHARED_H
+#include <QObject>
+
+class TestPlannerShared : public QObject {
+	Q_OBJECT
+
+private slots:
+	void initTestCase();
+
+	// test case grouping correspond to panels diveplanner window
+	void test_rates();
+	void test_planning();
+	void test_gas();
+	void test_notes();
+};
+
+#endif // TESTPLANNERSHARED_H