refactor: make nightly build debuggable

This is a temporary thing, as for now there is a bug (on theme change crash) that I just cannot reproduce on local builds. Making the nightly build debuggable for now will help debug this problem.

mastodon/build.gradle

@@ -57,6 +57,7 @@ android {
 		}
 		nightly{
 			initWith release
+			debuggable true
 			if(System.getenv("CURRENT_DATE") != null){
 				versionNameSuffix '-nightly+@' + System.getenv("CURRENT_DATE")
 			} else {