try building libsignal.dylib for aarch64-apple-darwin

.gitlab-ci.yml

@@ -57,6 +57,26 @@ compile x86_64-apple-darwin:
     - when: manual
       allow_failure: true
 
+compile aarch64-apple-darwin:
+  stage: native library
+  tags: [darwin-builder]
+  script:
+    - git clone https://github.com/signalapp/libsignal-client
+    - cd libsignal-client && git checkout "$libsignal_version"
+    - rustup target add aarch64-apple-darwin
+    - RUSTFLAGS='-C link-arg=-s' cargo build -p libsignal-jni --target aarch64-apple-darwin --release --verbose
+    - cp -v target/release/libsignal_jni.dylib ../libsignal_jni-aarch64-apple-darwin.dylib
+  artifacts:
+    paths:
+      - libsignal_jni-aarch64-apple-darwin.dylib
+  variables:
+    TARGET: aarch64-apple-darwin
+  rules:
+    - if: '$CI_PROJECT_ROOT_NAMESPACE == "signald"'
+      when: on_success
+    - when: manual
+      allow_failure: true
+
 jar:
   extends: .multitarget
   image: gradle:7