Re-translate the Japanese version (#1871)

* Retranslate Japanese docs with GPT-5.4

* Retranslate Japanese code with GPT-5.4

ja/codes/zig/.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug",
+            "type": "lldb",
+            "request": "launch",
+            "program": "${workspaceFolder}/zig-out/bin/${fileBasenameNoExtension}",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "preLaunchTask": "build"
+        }
+    ]
+}

ja/codes/zig/.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "zig.testArgs": ["build", "test", "-Dtest-filter=${filter}"]
+}

ja/codes/zig/.vscode/tasks.json

@@ -0,0 +1,10 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "zig build",
+        }
+    ]
+}