initial commit, frontend + backend prototype included

src/test/java/karsch/lukas/growbrosprototype/GrowBrosApplicationTests.java

+package karsch.lukas.growbrosprototype;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class GrowBrosApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}