Update .clang-format to regroup includes correctly and reformat tested files

Configure IncludeBlocks: Regroup and organize IncludeCategories into:
1. C/POSIX system headers
2. C++ standard library headers
3. Third-party library headers (explicitly matching <zip.h> and
   preserving external library headers written with angle brackets)
4. Project headers (cuttlefish/, allocd/, and external_proto/)

Apply clang-format specifically to all source files verified by
format_test_srcs targets.

Assisted-by: Jetski:Gemini Next
Bug: b/512215781

Author: Databean

.clang-format

@@ -19,4 +19,15 @@
 # of the below options.
 
 BasedOnStyle: Google
-IncludeBlocks: Preserve
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex:           '^[<"](cuttlefish|allocd|external_proto)/'
+    Priority:        4
+  - Regex:           '^<(zip|zlib|png|lz4|archive|tinyxml2|pcre2)\.h>'
+    Priority:        3
+  - Regex:           '^<([^/]*|(sys|linux|netinet|arpa|asm|net|gnu)/.*)\.h>'
+    Priority:        1
+  - Regex:           '^<[a-z_]*>'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3

base/cvd/cuttlefish/common/libs/fs/shared_fd_test.cpp

@@ -16,9 +16,10 @@
 
 #include "cuttlefish/common/libs/fs/shared_fd.h"
 
-#include <gtest/gtest.h>
 #include <unistd.h>
 
+#include <gtest/gtest.h>
+
 namespace cuttlefish {
 
 char pipe_message[] = "Testing the pipe";

base/cvd/cuttlefish/common/libs/utils/environment_test.cpp

@@ -20,8 +20,8 @@
 #include <string>
 #include <string_view>
 
-#include <gtest/gtest.h>
 #include "absl/cleanup/cleanup.h"
+#include <gtest/gtest.h>
 
 namespace cuttlefish {
 

base/cvd/cuttlefish/common/libs/utils/files_test.cpp

@@ -18,11 +18,11 @@
 #include <fstream>
 #include <string>
 
+#include "absl/cleanup/cleanup.h"
+#include "absl/strings/str_cat.h"
 #include <android-base/file.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
-#include "absl/cleanup/cleanup.h"
-#include "absl/strings/str_cat.h"
 
 #include "cuttlefish/result/result.h"
 #include "cuttlefish/result/result_matchers.h"

base/cvd/cuttlefish/common/libs/utils/flags_validator.cpp

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-#include <string>
-
 #include "cuttlefish/common/libs/utils/flags_validator.h"
 
+#include <string>
+
 namespace cuttlefish {
 Result<void> ValidateSetupWizardMode(const std::string& setupwizard_mode) {
   // One of DISABLED,OPTIONAL,REQUIRED

base/cvd/cuttlefish/common/libs/utils/inotify.cpp

@@ -14,17 +14,18 @@
  * limitations under the License.
  */
 
+#include "inotify.h"
+
 #include <limits.h>
 #include <string.h>
 #include <sys/inotify.h>
 #include <unistd.h>
+
 #include <string>
 #include <vector>
 
 #include "absl/log/log.h"
 
-#include "inotify.h"
-
 namespace cuttlefish {
 
 std::vector<std::string> GetCreatedFileListFromInotifyFd(int fd) {

base/cvd/cuttlefish/common/libs/utils/json.cpp

@@ -13,13 +13,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include "cuttlefish/common/libs/utils/json.h"
+
 #include <memory>
 #include <string>
 #include <string_view>
 
 #include "cuttlefish/common/libs/fs/shared_buf.h"
 #include "cuttlefish/common/libs/fs/shared_fd.h"
-#include "cuttlefish/common/libs/utils/json.h"
 
 namespace cuttlefish {
 

base/cvd/cuttlefish/common/libs/utils/known_paths.cpp

@@ -16,10 +16,10 @@
 
 #include "cuttlefish/common/libs/utils/known_paths.h"
 
-#include "cuttlefish/common/libs/utils/environment.h"
-
 #include <string>
 
+#include "cuttlefish/common/libs/utils/environment.h"
+
 namespace cuttlefish {
 
 std::string TempDir() { return StringFromEnv("TMPDIR", "/tmp"); }

base/cvd/cuttlefish/common/libs/utils/network_test.cpp

@@ -13,10 +13,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include <gtest/gtest.h>
-
 #include "cuttlefish/common/libs/utils/network.h"
 
+#include <gtest/gtest.h>
+
 namespace cuttlefish {
 namespace {
 

base/cvd/cuttlefish/common/libs/utils/proc_file_utils.cpp

@@ -25,14 +25,14 @@
 #include <unordered_map>
 #include <vector>
 
-#include <android-base/file.h>
-#include <fmt/core.h>
 #include "absl/log/log.h"
 #include "absl/strings/ascii.h"
 #include "absl/strings/match.h"
 #include "absl/strings/numbers.h"
 #include "absl/strings/str_split.h"
 #include "absl/strings/strip.h"
+#include <android-base/file.h>
+#include <fmt/core.h>
 
 #include "cuttlefish/common/libs/fs/shared_buf.h"
 #include "cuttlefish/common/libs/fs/shared_fd.h"