[Saylinks] Convert all GM Command Saylinks to Silent Saylinks. (#2373)

* [Saylinks] Convert all GM Command Saylinks to Silent Saylinks.
- This cleans up all non-silent GM Command Saylinks that we had before due to the way they worked before. All saylinks like this should be silent now.
- Add source short hand capability for say links with same link as text.

* Defaults to r anyway.

* Spacing.

zone/gm_commands/nudge.cpp

@@ -9,11 +9,7 @@ void command_nudge(Client *c, const Seperator *sep)
 			Chat::White,
 			fmt::format(
 				"Note: Partial or mixed arguments allowed, example {}.",
-				Saylink::Create(
-					"#nudge x=5.0",
-					false,
-					"#nudge x=5.0"
-				)
+				Saylink::Silent("#nudge x=5.0")
 			).c_str()
 		);
 		return;