common: added function to split a string to a vector by using a delimiter

src/common.hpp

@@ -17,4 +17,13 @@
 const std::string get_shell_env_var(const char* key,
 	const char *def_val="") noexcept;
 
+/*!
+ * \brief convert a string, separate by delim to a vector
+ * \param[in] in: string to split
+ * \param[in] delim: split caracter
+ * \return vector a substring
+ */
+const std::vector<std::string> splitString(const std::string& in,
+	const char delim) noexcept;
+
 #endif  // SRC_COMMON_HPP_