Python binding setup refactoring + cibuildwheel workflow (#2026)

* Python bindings: Make the test scripts handy for pytest

* Python bindings: Update MANIFEST.in with new paths

* Update .gitignore to exclude PyCharm-related files/folders

* Python bindings: Update CMakeLists.txt in order to set CMAKE_OSX_ARCHITECTURES var

* Python bindings:
- Moved project package settings to the new TOML format
- Refactored setup.py to cleanup/improve the code and make it ready for cibuildwheel
- Updated README.md with the package long description part
- Removed setup.cfg since universal wheel building will be deprecated soon

* Python bindings:
- Replaced old PyPI-publishing.yml workflow with brand-new one based on cibuildwheel
- Removed old building scripts

* Replaced macos-12 runner with macos-13 since it will be removed soon

* Python bindings: Specify SYSTEM_VERSION_COMPAT=0 env var for macos-13 x86_64 runner as per cibuildwheel warning message

* Python bindings: Enable i686 for debugging

* Python bindings: Enable DEBUG flag according to the presence of tag release

* Python bindings: Added matrix to cover i686 manylinux/musllinux builds

* Python bindings:
- Replaced macos-14 runner with macos-latest
- Bumped cibuildwheel GitHub action to 2.21.3 version

* Python bindings:
- Adapt test_uc_ctl_tb_cache test to the recent changes
- Fixed typos
- PEP8 fixes

* GitHub Action Workflow: Introduce BUILD_TYPE env var to select build type according to the presence of tag release

---------

Co-authored-by: mio <mio@lazym.io>

bindings/python/README.md

@@ -1,3 +1,21 @@
+# Unicorn
+
+Unicorn is a lightweight, multi-platform, multi-architecture CPU emulator framework
+based on [QEMU](http://qemu.org).
+
+Unicorn offers some unparalleled features:
+
+- Multi-architecture: ARM, ARM64 (ARMv8), M68K, MIPS, PowerPC, RISCV, SPARC, S390X, TriCore and X86 (16, 32, 64-bit)
+- Clean/simple/lightweight/intuitive architecture-neutral API
+- Implemented in pure C language, with bindings for Crystal, Clojure, Visual Basic, Perl, Rust, Ruby, Python, Java, .NET, Go, Delphi/Free Pascal, Haskell, Pharo, and Lua.
+- Native support for Windows & *nix (with Mac OSX, Linux, *BSD & Solaris confirmed)
+- High performance via Just-In-Time compilation
+- Support for fine-grained instrumentation at various levels
+- Thread-safety by design
+- Distributed under free software license GPLv2
+
+Further information is available at http://www.unicorn-engine.org
+
 # Python Bindings for Unicorn
 
 Originally written by Nguyen Anh Quynh, polished and redesigned by elicn, maintained by all community contributors.