Resolved android manifest asset doesnt get merge with final android apk manifest

when using admob or google play services pluigin in 2020.1b8
these plugins have a android manifest asset containing the admob app and app id respectively
that the pluigins needs to work, but when building the apk, the final manifest doesn't contain said admob app id resulting in a crash when opening the game on android

the manifest asset doesn't get imported/inyected/merged to the final build for some reason.

Case 1245611



edit: unity 2020.1 and up required to have android library folders with a ".androidlib"


in my case i had to rename plugins/android/GoogleMobileAdsPluigin to
plugins/android/GoogleMobileAdsPluigin.androidlib

and also change the manifestprocessor.cs to link the corrected path.