Android - LDK node POC

[JeanlChristophe]

DoD

• LN migrated from LDK to ldk-node ldk-node-android
• Wake2Pay POC works with ldk-node

[ovitrif]

If the task was about making the android native PoC using LDK-node, this PR finished it:

synonymdev/bitkit-android#4 (comment)