Added a playlist view. Can only play the playlists for now (no save/edit)

src/libs/utils/impl/String.cpp

@@ -164,7 +164,7 @@ bufferToString(const std::vector<unsigned char>& data)
 }
 
 std::string
-replaceInString(const std::string& str, const std::string& from, const std::string& to)
+replaceInString(std::string_view str, const std::string& from, const std::string& to)
 {
 	std::string res {str};
 	size_t pos = 0;

src/libs/utils/include/utils/String.hpp

@@ -87,7 +87,7 @@ readAs(std::string_view str);
 
 [[nodiscard]]
 std::string
-replaceInString(const std::string& str, const std::string& from, const std::string& to);
+replaceInString(std::string_view str, const std::string& from, const std::string& to);
 
 [[nodiscard]]
 std::string