chore(falco): deprecated -A

Signed-off-by: Luca Guerra <[email protected]>

userspace/falco/app/options.cpp

@@ -124,6 +124,7 @@ void options::define(cxxopts::Options &opts) {
 	                        "Print the rule json schema and exit.",
 	                        cxxopts::value(print_rule_schema)->default_value("false"))(
 	                        "A",
+							"DEPRECATED: use -o base_syscalls.all=true instead. "
 	                        "Monitor all events supported by Falco and defined in rules and "
 	                        "configs. Some events are ignored by default when -A is not specified "
 	                        "(the -i option lists these events ignored). Using -A can impact "