migrate to c++, all layers done except for data access

cli/handler.cpp

@@ -0,0 +1,38 @@
+#include <string>
+#include <vector>
+
+#include "include/handler.h"
+#include "include/printer.h"
+#include "include/dao.h"
+
+using namespace std;
+
+/** TODO: error propagation?? (now always returns 0) */
+
+int handle_create(Dao *dao, string title, string description) {
+    ticket_t t = dao->fetch_ticket_create(title, description);
+    vector<ticket_t> tickets;
+    tickets.push_back(t);
+    print_tickets(tickets);
+    return 0;
+}
+
+int handle_list(Dao *dao) {
+    vector<ticket_t> tickets = dao->fetch_ticket_get_all();
+    print_tickets(tickets);
+    return 0;
+}
+
+int handle_list(Dao *dao, string status) {
+    vector<ticket_t> tickets = dao->fetch_ticket_get_by_status(status);
+    print_tickets(tickets);
+    return 0;
+}
+
+int handle_detail(Dao *dao, unsigned long id) {
+    ticket_t t = dao->fetch_ticket_get_by_id(id);
+    vector<ticket_t> tickets;
+    tickets.push_back(t);
+    print_tickets(tickets);
+    return 0;
+}