Replace OSS licenses plugin with Licensee and some manually done UI.

This should fix both configuration cache and reproducible F-droid builds.

Cleanup and remove gplay/fdroid diff on open source licenses.

Co-authored by @jmartinesp

tests/konsist/src/test/kotlin/io/element/android/tests/konsist/KonsistClassNameTest.kt

@@ -108,6 +108,7 @@ class KonsistClassNameTest {
                 "Accompanist",
                 "AES",
                 "Android",
+                "Asset",
                 "Database",
                 "DBov",
                 "Default",