feat: add initial implementation of Go utilities and CI workflows

Maps/maps.go

@@ -0,0 +1,11 @@
+package Maps
+
+//goland:noinspection GoUnusedExportedFunction // library function
+func IsElementExist(s []string, str string) bool {
+	for _, v := range s {
+		if v == str {
+			return true
+		}
+	}
+	return false
+}