feat: implement CLI board game ORTHO

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto eol=lf

.github/workflows/build.yml

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+name: Build
+
+on:
+  pull_request:
+    paths:
+      - '**/*.rs'
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '.github/workflows/build.yml'
+  push:
+    paths:
+      - '**/*.rs'
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '.github/workflows/build.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        toolchain:
+          - "1.88.0"
+          - stable
+        os-arch:
+          - ubuntu-24.04-x86_64
+          - ubuntu-24.04-aarch64
+          - macos-x86_64
+          - macos-aarch64
+          - windows-x86_64
+        include:
+          - os-arch: ubuntu-24.04-x86_64
+            runner: ubuntu-24.04
+            target: x86_64-unknown-linux-gnu
+          - os-arch: ubuntu-24.04-aarch64
+            runner: ubuntu-24.04-arm
+            target: aarch64-unknown-linux-gnu
+          - os-arch: macos-x86_64
+            runner: macos-26-intel
+            target: x86_64-apple-darwin
+          - os-arch: macos-aarch64
+            runner:	macos-26
+            target: aarch64-apple-darwin
+          - os-arch: windows-x86_64
+            runner: windows-2025
+            target: x86_64-pc-windows-gnu
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4
+        with:
+          toolchain: ${{ matrix.toolchain }}
+          target: ${{ matrix.target }}
+      - run: cargo build --workspace --all-targets --all-features --target ${{ matrix.target }}

.github/workflows/lint.yml

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+name: Lint
+
+on:
+  pull_request:
+    paths:
+      - '**/*.rs'
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '.github/workflows/lint.yml'
+  push:
+    paths:
+      - '**/*.rs'
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '.github/workflows/lint.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  rustfmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4
+        with:
+          toolchain: stable
+          components: rustfmt
+      - run: cargo fmt --all -- --check
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4
+        with:
+          toolchain: stable
+          components: clippy
+      - run: cargo clippy --workspace --all-targets --all-features -- -D warnings

.github/workflows/spdx.yml

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+name: SPDX License Check
+
+on:
+  pull_request:
+    paths:
+      - '**/*.rs'
+      - ".github/workflows/spdx.yml"
+  push:
+    paths:
+      - '**/*.rs'
+      - ".github/workflows/spdx.yml"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  spdx:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: enarx/spdx@d4020ee98e3101dd487c5184f27c6a6fb4f88709
+        with:
+          licenses: Apache-2.0

.github/workflows/test.yml

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+name: Test
+
+on:
+  push:
+    paths:
+      - '**/*.rs'
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '.github/workflows/test.yml'
+  pull_request:
+    paths:
+      - '**/*.rs'
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '.github/workflows/test.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  integration-test:
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        toolchain:
+          - "1.88.0"
+          - stable
+        os-arch:
+          - ubuntu-24.04-x86_64
+          - ubuntu-24.04-aarch64
+          - macos-x86_64
+          - macos-aarch64
+          - windows-x86_64
+        include:
+          - os-arch: ubuntu-24.04-x86_64
+            runner: ubuntu-24.04
+            target: x86_64-unknown-linux-gnu
+          - os-arch: ubuntu-24.04-aarch64
+            runner: ubuntu-24.04-arm
+            target: aarch64-unknown-linux-gnu
+          - os-arch: macos-x86_64
+            runner: macos-26-intel
+            target: x86_64-apple-darwin
+          - os-arch: macos-aarch64
+            runner:	macos-26
+            target: aarch64-apple-darwin
+          - os-arch: windows-x86_64
+            runner: windows-2025
+            target: x86_64-pc-windows-gnu
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4
+        with:
+          toolchain: ${{ matrix.toolchain }}
+          target: ${{ matrix.target }}
+      - run: cargo test --all-targets --target ${{ matrix.target }}