Refactor android-builder into command scripts

lib/commands/build.sh

@@ -0,0 +1,24 @@
+#!/data/data/com.termux/files/usr/bin/bash
+set -e
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+source "$ROOT_DIR/lib/common.sh"
+
+test -f local.properties || echo "sdk.dir=$SDK" > local.properties
+
+BUILD_TYPE="$(get_build_type)"
+case "$BUILD_TYPE" in
+  debug) TASK="assembleDebug" ;;
+  release) TASK="assembleRelease" ;;
+  *)
+    echo "Unknown build type: $BUILD_TYPE"
+    exit 1
+    ;;
+esac
+
+if [ -f ./gradlew ]; then
+  chmod +x ./gradlew
+  ./gradlew "$TASK"
+else
+  gradle "$TASK"
+fi