Switch sqlite temp storage to disk; fix failures in V16

[dae]

Original fix attempt and discussion at ankidroid/Anki-Android-Backend#193

Depends on #11581

[mikehardy]

Discussion began here: ankitects/anki@f15e294#r75810592

I'm +1 on this change I think it is the only way to be sure we won't overflow JVM heap on android

[dae]

I've updated this so it will apply cleanly without the Java backend change.

[mikehardy]

Nice, this looks good to go all by itself and having read related issues I think it's a necessary change for reliability

[mikehardy]

Pulled locally:

1. passed jacocoTestReport with API31 + API25 emulators up and V11 schema
2. I test V16 by switching V16 on:

mike@bistromath:~/work/AnkiDroid/Anki-Android-Upstream (tmp-fix *) % git stash show -p
diff --git a/AnkiDroid/src/main/java/com/ichi2/anki/AnkiDroidApp.java b/AnkiDroid/src/main/java/com/ichi2/anki/AnkiDroidApp.java
index fcb25ce71..aff48859f 100644
--- a/AnkiDroid/src/main/java/com/ichi2/anki/AnkiDroidApp.java
+++ b/AnkiDroid/src/main/java/com/ichi2/anki/AnkiDroidApp.java
@@ -87,7 +87,7 @@ public class AnkiDroidApp extends Application {
      *
      * Set this and {@link com.ichi2.libanki.Consts#SCHEMA_VERSION} to 16.
      */
-    public static boolean TESTING_USE_V16_BACKEND = false;
+    public static boolean TESTING_USE_V16_BACKEND = true;
 
     public static final String XML_CUSTOM_NAMESPACE = "http://arbitrary.app.namespace/com.ichi2.anki";
 
diff --git a/AnkiDroid/src/main/java/com/ichi2/libanki/Consts.kt b/AnkiDroid/src/main/java/com/ichi2/libanki/Consts.kt
index 495b5ec00..b79144952 100644
--- a/AnkiDroid/src/main/java/com/ichi2/libanki/Consts.kt
+++ b/AnkiDroid/src/main/java/com/ichi2/libanki/Consts.kt
@@ -106,7 +106,7 @@ object Consts {
 
     // deck schema & syncing vars
     @JvmField
-    var SCHEMA_VERSION = 11
+    var SCHEMA_VERSION = 16
 
     /** The database schema version that we can downgrade from  */
     const val SCHEMA_DOWNGRADE_SUPPORTED_VERSION = 16

...and that fails ./gradlew jacocoTestReport on the emulators, until I shell on to them and rm -fr /sdcard/AnkiDroid, then ./gradlew jacocoTestReport works except for some testing failures

That's not a regression, it is what I see on main (running V16 test on existing V11 collection not working for me) so this seems good

Definitely not a regression for V11 folks not doing V16-experimental stuff on main