style: 更新 .clang-format 规则并重新格式化所有源文件

- 重构模块使用新的代码风格
- 老代码 (src 目录下的代码) 继续使用之前的代码风格

通过在需要不同代码风格的目录下放对应 .clang-format 配置文件实现

tests/config/fixture_valid_config.c

@@ -1,28 +1,45 @@
 #include <zdwm/config.h>
 
-static bool fixture_layout(const zdwm_layout_ctx_t *ctx,
-                           zdwm_layout_result_t *out) {
+static bool
+fixture_layout(const zdwm_layout_ctx_t *ctx, zdwm_layout_result_t *out) {
   if (!ctx || !out) return false;
 
   zdwm_layout_result_reset(out);
   if (!ctx->window_ids || ctx->window_count == 0) return true;
 
-  zdwm_layout_result_push(out, (zdwm_layout_item_t){
-                                 .window_id = ctx->window_ids[0],
-                                 .rect = ctx->workarea,
-                               });
+  zdwm_layout_result_push(
+    out,
+    (zdwm_layout_item_t){
+      .window_id = ctx->window_ids[0],
+      .rect      = ctx->workarea,
+    }
+  );
   return true;
 }
 
-bool setup(const zdwm_api_t *api, zdwm_config_builder_t *builder,
-           const zdwm_output_info_t *outputs, size_t output_count) {
+bool setup(
+  const zdwm_api_t *api,
+  zdwm_config_builder_t *builder,
+  const zdwm_output_info_t *outputs,
+  size_t output_count
+) {
   if (!api || !builder || !outputs || output_count == 0) return false;
 
-  zdwm_layout_id_t layout_id =
-    api->register_layout(builder, "test-only", "[T]", "fixture layout",
-                         fixture_layout);
+  zdwm_layout_id_t layout_id = api->register_layout(
+    builder,
+    "test-only",
+    "[T]",
+    "fixture layout",
+    fixture_layout
+  );
   if (layout_id == ZDWM_LAYOUT_ID_INVALID) return false;
 
-  return api->define_workspace(builder, 0, "from-so", &layout_id, 1,
-                               layout_id) != ZDWM_WORKSPACE_ID_INVALID;
+  return api->define_workspace(
+           builder,
+           0,
+           "from-so",
+           &layout_id,
+           1,
+           layout_id
+         ) != ZDWM_WORKSPACE_ID_INVALID;
 }