Carry the Android checkout's uncommitted work into the repo

Four changes lived only in the standalone Android checkout, which is about to
be removed: the foojay toolchain resolver in settings.gradle.kts, an F-Droid
recipe pinned to a commit rather than the v1.1.0 tag, the Gradle daemon JVM
criteria, and the Play Store launcher icon. None of them existed here.

Note that the F-Droid recipe still builds from Calendarr-Android.git, so that
remote has to keep working even though its local checkout is going away.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

android/fdroid/com.scarriffle.calendarr.yml

@@ -19,7 +19,7 @@ Repo: https://git.scarriffle.com/Scarriffle/Calendarr-Android.git
 Builds:
   - versionName: 1.1.0
     versionCode: 2
-    commit: v1.1.0
+    commit: dd347a07f1c7c5fc55cc8bfb7fdfc5c5c020793f
     subdir: app
     gradle:
       - yes