feat(!783): Add --once shortcut flag to issue command

src/admin/token/commands.rs

@@ -10,6 +10,8 @@ pub(super) async fn issue_token(&self, expires: super::TokenExpires) -> Result {
 			None
 		} else if let Some(max_uses) = expires.max_uses {
 			Some(TokenExpires::AfterUses(max_uses))
+		} else if expires.once {
+			Some(TokenExpires::AfterUses(1))
 		} else if let Some(max_age) = expires
 			.max_age
 			.as_deref()

src/admin/token/mod.rs

@@ -44,4 +44,8 @@ pub struct TokenExpires {
 	/// This token will never expire.
 	#[arg(long)]
 	immortal: bool,
+
+	/// A shortcut for `--max-uses 1`.
+	#[arg(long)]
+	once: bool,
 }

src/service/registration_tokens/data.rs

@@ -48,7 +48,7 @@ impl DatabaseTokenInfo {
 
 impl std::fmt::Display for DatabaseTokenInfo {
 	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-		write!(f, "Token created by {} and used {} time. ", &self.creator, self.uses)?;
+		write!(f, "Token created by {} and used {} times. ", &self.creator, self.uses)?;
 		if let Some(expires) = &self.expires {
 			write!(f, "{expires}.")?;
 		} else {