Minor Windows path escaping issue when building for Android

[JUGYx]

ArmorPaint version:

019192c

OS / GPU model:
Building on Windows for Android.

Issue description:
make.bat generates an unescaped Windows path for app/CMakeLists.txt, it's caused by this line in base/project.js:

project.add_define("EMBED_H_PATH=\"" + os_cwd() + "/build/embed.h" + "\"");

os_cwd outputs a native Windows path containing backslashes.

Here's the Android Studio error:

when parsing string

    ${CMAKE_C_FLAGS_DEBUG} -DEMBED_H_PATH=\\\"C:\Users\intel\Downloads\armorpaint\paint/build/embed.h\\\" -DIRON_ANDROID -DIRON_VULKAN -DVK_USE_PLATFORM_ANDROID_KHR -DWITH_KONG -DWITH_PLUGINS -DWITH_PHYSICS -DWITH_EVAL -DWITH_BC7 -DIDLE_SLEEP -DWITH_IMAGE_WRITE -DWITH_VIDEO_WRITE

  Invalid character escape '\U'

Manually escaping the generated backslashes resolves the issue.

Steps to reproduce:

• Run make.bat:

..\base\make.bat --target android

• Open and attempt to build the project in Android Studio.