feat: godot-cpp as the C++23 module `godot_cpp` #1

	name: CI

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: ci-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	name: mcpp (${{ matrix.os }})
	runs-on: ${{ matrix.os }}
	timeout-minutes: 90
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-15, windows-latest]
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Install Xlings
	shell: bash
	env:
	XLINGS_NON_INTERACTIVE: 1
	run: \|
	curl -fsSL https://raw.githubusercontent.com/openxlings/xlings/refs/heads/main/tools/other/quick_install.sh \| bash
	echo "$HOME/.xlings/subos/current/bin" >> "$GITHUB_PATH"

	- name: Install project tools
	shell: bash
	run: \|
	xlings update
	xlings install

	# Same transition step as ffmpeg-m / imgui-m: pin the glibc gcc
	# toolchain explicitly until mcpp's bootstrap default settles.
	- name: Set default toolchain
	shell: bash
	run: \|
	mcpp toolchain install gcc 16.1.0
	mcpp toolchain default gcc@16.1.0
	mcpp --version

	# Cold: compat.godot-cpp builds 1022 TUs from source underneath this.
	- name: Build the module layer
	shell: bash
	run: mcpp build

	# tests/godot_cpp_module.cpp -- the import surface
	# tests/godot_cpp_macros.cpp -- GDCLASS next to the import
	- name: Run tests
	shell: bash
	run: mcpp test

	# A real GDExtension shared library -- the shape this package exists for,
	# and what caught the missing -fPIC in compat.godot-cpp.
	- name: Build the summator GDExtension example
	shell: bash
	run: \|
	cd examples/summator
	mcpp build

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