WHC Shell: keyboard-first Android terminal over SSH to local Termux

Vendored Termux terminal-emulator/renderer (Apache 2.0) with kitty keyboard
protocol, modifyOtherKeys and any-event mouse tracking; sshj client with
Ed25519 key login and TOFU host keys; Termux font/colors/cursor sync;
mouse selection, context menu, zoom and fullscreen shortcuts.

gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx2g -Dfile.encoding=UTF-8
+android.useAndroidX=true
+android.nonTransitiveRClass=true