Separate android into its own job

.gitea/workflows/android.yaml

@@ -0,0 +1,11 @@
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build:
+    name: Install
+    runs-on: nixos-x86_64-linux
+    steps:
+      - name: android-build
+        run: nix develop --impure --command bash -c 'export GRADLE_USER_HOME=$PWD; export HOME=$PWD; cd android; ./gradlew assembleDebug'

.gitea/workflows/tests.yaml

@@ -1,7 +1,6 @@
 name: Tests
 on:
   pull_request:
-
 env:
   NIXPKGS_ALLOW_UNFREE: 1
 
@@ -27,5 +26,3 @@ jobs:
         run: nix develop --impure --command bash -c 'export HOME=$PWD; prettier . --check'
       - name: test
         run: nix develop --impure --command bash -c 'export HOME=$PWD; yarn run test --no-watchman'
-      - name: android-build
-        run: nix develop --impure --command bash -c 'export GRADLE_USER_HOME=$PWD; cd android; ./gradlew assembleDebug'