Use StringMatchCandidate::new to construct candidates more conveniently

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

crates/fuzzy/src/fuzzy.rs

@@ -98,6 +98,16 @@ impl<'a> MatchCandidate for PathMatchCandidate<'a> {
     }
 }
 
+impl StringMatchCandidate {
+    pub fn new(id: usize, string: String) -> Self {
+        Self {
+            id,
+            char_bag: CharBag::from(string.as_str()),
+            string,
+        }
+    }
+}
+
 impl<'a> MatchCandidate for &'a StringMatchCandidate {
     fn has_chars(&self, bag: CharBag) -> bool {
         self.char_bag.is_superset(bag)