B11: ship npm binaries for linux-arm64 and win32-arm64

The napi loader resolves wickra-linux-arm64-gnu and
wickra-win32-arm64-msvc, but neither was published, so require('wickra')
failed on those platforms. Adds both to napi.triples and
optionalDependencies, adds their npm/ package templates, and extends the
release node-build matrix to build them on GitHub's native ARM runners
(ubuntu-24.04-arm, windows-11-arm).

.github/workflows/release.yml

@@ -141,9 +141,11 @@ jobs:
       matrix:
         include:
           - { host: ubuntu-latest, target: x86_64-unknown-linux-gnu }
+          - { host: ubuntu-24.04-arm, target: aarch64-unknown-linux-gnu }
           - { host: macos-latest, target: x86_64-apple-darwin }
           - { host: macos-latest, target: aarch64-apple-darwin }
           - { host: windows-latest, target: x86_64-pc-windows-msvc }
+          - { host: windows-11-arm, target: aarch64-pc-windows-msvc }
     runs-on: ${{ matrix.host }}
     steps:
       - uses: actions/checkout@v4