Add build system, versioning, releases, multilingual docs

- version.py with v1.0.0
- build.py (PyInstaller cross-platform build script)
- build.sh / build.bat for quick builds
- releases/ServerManager-v1.0.0-win-x64.exe (Windows x64 binary)
- README.md with docs in English, Russian, Chinese
- CHANGELOG.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

build.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Build script for Linux / macOS
+# Run on the target OS to build for that platform.
+#
+# Usage:
+#   chmod +x build.sh
+#   ./build.sh          # build
+#   ./build.sh --clean  # clean first
+set -e
+
+cd "$(dirname "$0")"
+
+# Install deps if needed
+pip install -r requirements.txt pyinstaller 2>/dev/null || pip3 install -r requirements.txt pyinstaller
+
+if [ "$1" = "--clean" ]; then
+    rm -rf build dist *.spec
+    echo "Cleaned"
+fi
+
+python build.py "$@" || python3 build.py "$@"