fix(match): fix clippy warning

espanso-match/src/regex/mod.rs

@@ -40,19 +40,11 @@ impl<Id> RegexMatch<Id> {
   }
 }
 
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub struct RegexMatcherState {
   buffer: String,
 }
 
-impl Default for RegexMatcherState {
-  fn default() -> Self {
-    Self {
-      buffer: String::new(),
-    }
-  }
-}
-
 pub struct RegexMatcherOptions {
   pub max_buffer_size: usize,
 }

espanso-match/src/rolling/matcher.rs

@@ -50,20 +50,12 @@ struct RollingMatcherStatePath<'a, Id> {
   events: Vec<(Event, IsWordSeparator)>,
 }
 
+#[derive(Default)]
 pub struct RollingMatcherOptions {
   pub char_word_separators: Vec<String>,
   pub key_word_separators: Vec<Key>,
 }
 
-impl Default for RollingMatcherOptions {
-  fn default() -> Self {
-    Self {
-      char_word_separators: Vec::new(),
-      key_word_separators: Vec::new(),
-    }
-  }
-}
-
 pub struct RollingMatcher<Id> {
   char_word_separators: Vec<String>,
   key_word_separators: Vec<Key>,

espanso-match/src/rolling/mod.rs

@@ -78,6 +78,7 @@ pub struct StringMatchOptions {
   pub right_word: bool,
 }
 
+#[allow(clippy::derivable_impls)]
 impl Default for StringMatchOptions {
   fn default() -> Self {
     Self {