Conflict with c++_shared  #47

I believe library shall not add its own c++_shared lib.
When we have build arguments:

android {
    compileSdkVersion project.properties.sdk_version
    defaultConfig {
        minSdkVersion project.properties.min_sdk_version
        targetSdkVersion project.properties.sdk_version
        externalNativeBuild {
            cmake {
                cppFlags "-std=c++14 -fexceptions"
                arguments "-DANDROID_ARM_NEON=TRUE",'-DANDROID_STL=c++_shared'
            }
        }
    }

Build fails with:

2 files found with path 'lib/arm64-v8a/libc++_shared.so' from inputs:

• /Users/renetik/Development/renetik-instruments-android/project/renetik-instruments-library-audio/build/intermediates/library_jni/debug/jni/arm64-v8a/libc++_shared.so
• /Users/renetik/.gradle/caches/transforms-3/49930d1a19493a31fa0ff855b95c71e4/transformed/jetified-mobile-ffmpeg-full-4.4/jni/arm64-v8a/libc++_shared.so
  If you are using jniLibs and CMake IMPORTED targets, see
  https://developer.android.com/r/tools/jniLibs-vs-imported-targets