Bind star patterns in match statements (#3169)

crates/ruff/resources/test/fixtures/pyflakes/F821_9.py

@@ -20,7 +20,27 @@ def f(provided: int) -> int:
     match provided:
         case True:
             return captured  # F821
-        case [captured, *_]:
-            return captured
+
+
+def f(provided: int) -> int:
+    match provided:
         case captured:
             return captured
+
+
+def f(provided: int) -> int:
+    match provided:
+        case [captured, *_]:
+            return captured
+
+
+def f(provided: int) -> int:
+    match provided:
+        case [*captured]:
+            return captured
+
+
+def f(provided: int) -> int:
+    match provided:
+        case {**captured}:
+            return captured

crates/ruff/src/checkers/ast.rs

@@ -3863,6 +3863,10 @@ where
     fn visit_pattern(&mut self, pattern: &'b Pattern) {
         if let PatternKind::MatchAs {
             name: Some(name), ..
+        }
+        | PatternKind::MatchStar { name: Some(name) }
+        | PatternKind::MatchMapping {
+            rest: Some(name), ..
         } = &pattern.node
         {
             self.add_binding(