add functions of every frame to mocks

[todo]

two/tests/test_frames_frames.c

Lines 15 to 20 in 8d698b7

	//TODO: add functions of every frame to mocks
	DEFINE_FFF_GLOBALS;
	FAKE_VALUE_FUNC(int, read_window_update_payload, frame_header_t *, void *, uint8_t *);
	FAKE_VALUE_FUNC(int, read_data_payload, frame_header_t *, void *, uint8_t *);
	FAKE_VALUE_FUNC(int, read_goaway_payload, frame_header_t *, void *, uint8_t *);
	FAKE_VALUE_FUNC(int, read_settings_payload, frame_header_t *, void *, uint8_t *);

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This issue was generated by todo based on a TODO: comment in 8d698b7. It's been assigned to @gnorambuena because they committed the code.