Fixes to support installation on Apple Silicon (ARM)

[skyler14]

When I pulled this onto an M1 Macbook Pro I noticed I was unable to install it, cmake would run into depedency issues that were intractable on the platform. I made a few changes in this which allowed me to successfully install it via pip install . on my system. I added a wheel builder that I was able to then test installation via pip install git+https://github.com/skyler14/symspellcpppy.git and successfully install in another conda environment. These aren't comprehensively tested but I think should cover many platforms.

[Copilot]

Pull Request Overview

This PR adds support for building and installing the SymSpellCppPy package on Apple Silicon (ARM) Macs by updating CMake requirements, adding ARM64-specific build configurations, and creating a comprehensive CI workflow for wheel building across multiple platforms.

• Updates CMake minimum version to 3.18.0 for Apple Silicon support and adds ARM64-specific compiler flags
• Modernizes Python version requirements (3.7+ instead of 3.4+) and pybind11 dependencies
• Introduces automated wheel building workflow with support for multiple platforms including Apple Silicon

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 5 comments.

File	Description
setup.py	Adds CMake version checks, Apple Silicon compiler flags, and updates Python/dependency requirements
CMakeLists.txt	Updates minimum CMake version and adds ARM64-specific build optimizations
.github/workflows/build-wheels.yml	New CI workflow for building wheels across platforms including Apple Silicon support

[skyler14]

I think that should be everything