run clippy fix

crates/store/src/auth/middleware.rs

@@ -23,7 +23,7 @@ impl<AP: AuthenticationProvider> Clone for AuthenticationLayer<AP> {
 }
 
 impl<AP: AuthenticationProvider> AuthenticationLayer<AP> {
-    pub fn new(auth_provider: Arc<AP>) -> Self {
+    pub const fn new(auth_provider: Arc<AP>) -> Self {
         Self { auth_provider }
     }
 }

crates/store/src/auth/principal.rs

@@ -35,7 +35,7 @@ impl Principal {
     /// Returns true if the user is either
     /// - the principal itself
     /// - has full access to the prinicpal (is member)
-    pub fn is_principal(&self, principal: &str) -> bool {
+    #[must_use] pub fn is_principal(&self, principal: &str) -> bool {
         if self.id == principal {
             return true;
         }

crates/store/src/auth/principal_type.rs

@@ -3,8 +3,8 @@ use std::fmt::Display;
 use rustical_xml::ValueSerialize;
 use serde::{Deserialize, Serialize};
 
-/// https://datatracker.ietf.org/doc/html/rfc5545#section-3.2.3
-#[derive(Debug, Clone, Deserialize, Serialize, Default, PartialEq, clap::ValueEnum)]
+/// <https://datatracker.ietf.org/doc/html/rfc5545#section-3.2.3>
+#[derive(Debug, Clone, Deserialize, Serialize, Default, PartialEq, Eq, clap::ValueEnum)]
 #[serde(rename_all = "lowercase")]
 pub enum PrincipalType {
     #[default]
@@ -36,13 +36,13 @@ impl TryFrom<&str> for PrincipalType {
 }
 
 impl PrincipalType {
-    pub fn as_str(&self) -> &'static str {
+    #[must_use] pub const fn as_str(&self) -> &'static str {
         match self {
-            PrincipalType::Individual => "INDIVIDUAL",
-            PrincipalType::Group => "GROUP",
-            PrincipalType::Resource => "RESOURCE",
-            PrincipalType::Room => "ROOM",
-            PrincipalType::Unknown => "UNKNOWN",
+            Self::Individual => "INDIVIDUAL",
+            Self::Group => "GROUP",
+            Self::Resource => "RESOURCE",
+            Self::Room => "ROOM",
+            Self::Unknown => "UNKNOWN",
         }
     }
 }