Set up CI for Android builds

.circleci/config.yml

@@ -40,6 +40,16 @@ jobs:
       - run: /opt/devkitpro/portlibs/switch/bin/aarch64-none-elf-cmake -S. -Bbuild .. -DNIGHTLY_BUILD=ON
       - run: cmake --build build -j 2
       - store_artifacts: {path: ./build/devilutionx.nro, destination: devilutionx.nro}
+  android:
+    docker:
+      - image: circleci/android:api-28-ndk
+    working_directory: ~/repo
+    steps:
+      - checkout
+      - run: sudo apt update -y
+      - run: sudo apt install -y g++ cmake ninja-build
+      - run: cd android-project && ./gradlew assembleDebug
+      - store_artifacts: {path: ./android-project/app/build/outputs/apk/debug/app-debug.apk, destination: devilutionx-debug.apk}
   3ds:
     docker:
       - image: devkitpro/devkitarm:latest
@@ -85,6 +95,7 @@ workflows:
       - linux_x86_64
       - linux_x86_64_test
       - switch
+      - android
       - 3ds
       - amigaos-m68k
       - vita

android-project/app/build.gradle

@@ -38,7 +38,7 @@ android {
         externalNativeBuild {
             cmake {
                 path '../../CMakeLists.txt'
-                version "3.18.1"
+                version "3.13.0+"
             }
         }