Prepare package for PyPI publishing

- Add MIT LICENSE file
- Enhance pyproject.toml with full metadata
- Add GitHub Actions workflows for CI and release

.github/workflows/ci.yml

@@ -0,0 +1,48 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Rust
+        uses: dtolnay/rust-action@stable
+
+      - name: Run Rust tests
+        run: cargo test --all-features
+
+      - name: Run Rust clippy
+        run: cargo clippy --all-features -- -D warnings
+
+      - name: Check Rust formatting
+        run: cargo fmt --check
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Build wheel
+        uses: PyO3/maturin-action@v1
+        with:
+          args: --release --out dist
+
+      - name: Install and test import
+        run: |
+          pip install dist/*.whl
+          python -c "import raptorbt; print(raptorbt.__version__)"

.github/workflows/release.yml

@@ -0,0 +1,122 @@
+name: Release
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      publish:
+        description: 'Publish to PyPI'
+        required: true
+        type: boolean
+        default: false
+
+permissions:
+  contents: read
+
+jobs:
+  # Build wheels for Linux
+  linux:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [x86_64, aarch64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.target }}
+          args: --release --out dist
+          manylinux: auto
+
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-linux-${{ matrix.target }}
+          path: dist
+
+  # Build wheels for macOS
+  macos:
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        target: [x86_64, aarch64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.target }}-apple-darwin
+          args: --release --out dist
+
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-macos-${{ matrix.target }}
+          path: dist
+
+  # Build wheels for Windows
+  windows:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        target: [x64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          args: --release --out dist
+
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-windows-${{ matrix.target }}
+          path: dist
+
+  # Build source distribution
+  sdist:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build sdist
+        uses: PyO3/maturin-action@v1
+        with:
+          command: sdist
+          args: --out dist
+
+      - name: Upload sdist
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-sdist
+          path: dist
+
+  # Publish to PyPI
+  publish:
+    name: Publish to PyPI
+    runs-on: ubuntu-latest
+    needs: [linux, macos, windows, sdist]
+    if: github.event_name == 'release' || (github.event_name == 'workflow_dispatch' && inputs.publish)
+    environment:
+      name: pypi
+      url: https://pypi.org/p/raptorbt
+    permissions:
+      id-token: write  # Required for trusted publishing
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          pattern: wheels-*
+          path: dist
+          merge-multiple: true
+
+      - name: List dist contents
+        run: ls -la dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1