rpo: ship default-enable config for ComputerCraft Recreated, bump 0.19.5

Resource Pack Overrides config field names extracted directly from the
mod's class files (default_packs + default_overrides confirmed via grep
on the .class strings). Config ships through defaultconfigs/ so it
seeds the player's local config on first run and respects later edits.

The 'default_position: TOP' override puts the ReCreated pack at the top
of the enabled-packs list so it takes precedence over the vanilla
ComputerCraft textures.

If the filename or schema turns out to be off when tested, it's a
one-line follow-up to fix.

pack/overrides/defaultconfigs/resourcepackoverrides.json

@@ -0,0 +1,11 @@
+{
+  "default_packs": [
+    "file/Computer Craft Recreated v1.2.zip"
+  ],
+  "default_overrides": [
+    {
+      "id": "file/Computer Craft Recreated v1.2.zip",
+      "default_position": "TOP"
+    }
+  ]
+}