types and db setup

include/database.hpp

@@ -0,0 +1,12 @@
+#include "types.hpp"
+
+class PostgresDB {
+private:
+    std::string conn_str;
+
+public:
+    PostgresDB(const std::string& connection) : conn_str(connection) {}
+
+    User GetUser(const int uid);
+    User GetUser(const std::string& username, const std::string& password);
+};