[embedding] Add embedding-build-android-tests and delete misc/wrt-maven-android-tests

- Move misc/wrt-maven-android-tests to embeddingapi/embedding-build-android-tests
- Add ant build cases
- Add adt build cases

Impacted tests(approved): new 6, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 6, fail 0, block 0