Broadcast various requests as per #4684 (#4920)

* multiple broadcast flags

* rewrite with single --broadcast option

* satisfy cargo fmt

* shorten sync-committee-messages

* fix a doc comment and a test

* use strum

* Add broadcast test to simulator

* bring --disable-run-on-all flag back with deprecation notice

validator_client/Cargo.toml

@@ -61,3 +61,4 @@ malloc_utils = { workspace = true }
 sysinfo = { workspace = true }
 system_health = { path = "../common/system_health" }
 logging = { workspace = true }
+strum = { workspace = true }