refactor: 拆分 counter statement 计数分发

crates/oxide_compiler/src/counter/stmt/block.rs

@@ -0,0 +1,11 @@
+use super::*;
+
+impl Compiler {
+    pub(in crate::counter) fn count_block_statement(
+        &self, block: &oxide_parser::BlockStatement<'_>, ctx: &mut CompileCtx,
+    ) {
+        for s in &block.body {
+            self.count_statement(s, ctx);
+        }
+    }
+}