Implement specific *all functions

Specific `_*all` and `_*all_with` functions were implemented to make
the API more concise and clean, and to replace the use of
`RELAY_CHN_ID_ALL`, which caused confusion within the API.

Refs #1085

src/relay_chn_output.c

@@ -6,7 +6,6 @@
 
 #include "esp_check.h"
 #include "esp_log.h"
-#include "relay_chn_defs.h"
 #include "relay_chn_output.h"
 #include "relay_chn_core.h"