fix(build): Improve build system reliability and flexibility

[Eyizoha]

Purpose

• feat(third_party): Add checksum verification for downloaded dependencies
  • Avoid redundant downloads of dependency packages
• fix(build): Set Protobuf_ROOT for ORC
  • Prevent ORC from potentially using system protoc during compilation, which could lead to mismatch between generated code and library
• fix(build): Set the expected output path
  • Replace undefined path variables and unify artifact placement paths
• feat(build): Add option to disable C++11 ABI
  • Facilitate integration for projects not using C++11 ABI
• feat(build): Add build and package script
  • Provide a simple automated build and packaging script

Tests

None

API and Format

No impact on API or format

Documentation

No new features introduced

[Copilot]

Pull request overview

This PR improves the build system's reliability and flexibility by adding checksum verification for downloaded dependencies, fixing build configuration issues, and providing a convenient build/package script.

Changes:

• Added checksum verification with automatic skip of already-downloaded dependencies to avoid redundant downloads
• Fixed build configuration by setting Protobuf_ROOT for ORC, replacing undefined output path variables with proper CMAKE_* variables, and adding C++11 ABI control
• Added an automated build and packaging script for simplified workflows

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
third_party/versions.txt	Added package name variables for each dependency to support checksum verification and local file detection
third_party/download_dependencies.sh	Implemented SHA256 checksum verification with multi-platform support and automatic skip logic for existing valid files
cmake_modules/ThirdpartyToolchain.cmake	Added THIRDPARTY_DIR variable, local file fallback logic, Protobuf_ROOT for ORC, and C++11 ABI flag propagation to external projects
cmake_modules/BuildUtils.cmake	Replaced undefined OUTPUT_PATH variables with proper CMAKE_*_OUTPUT_DIRECTORY variables for consistent artifact placement
build_and_package.sh	New script providing automated build and packaging workflow with configurable options
CMakeLists.txt	Added PAIMON_USE_CXX11_ABI option with validation preventing Lance/Lumina from being enabled when ABI is off, and added CMAKE_RUNTIME_OUTPUT_DIRECTORY definition
.gitignore	Added output directory to ignore list

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[Copilot]

The CMAKE_OPTIONS variable should be quoted when passed to cmake to properly handle options with spaces or special characters. Without quotes, word splitting could cause issues.