i18n(uk): add missing files, translate P4 root docs

- Copy code/image/config files across all modules
- Translate brand-voice and code-review templates
- Translate CONTRIBUTING, CODE_OF_CONDUCT, SECURITY, STYLE_GUIDE
- Copy CHANGELOG as-is (technical log)

Ref: luongnv89/claude-howto#63

uk/05-mcp/github-mcp.json

@@ -0,0 +1,11 @@
+{
+  "mcpServers": {
+    "github": {
+      "command": "npx",
+      "args": ["@modelcontextprotocol/server-github"],
+      "env": {
+        "GITHUB_TOKEN": "${GITHUB_TOKEN}"
+      }
+    }
+  }
+}