Support setting custom ABI list

Also stop building riscv64 by default

native/src/Application.mk

@@ -1,5 +1,4 @@
 APP_BUILD_SCRIPT := src/Android.mk
-APP_ABI          := armeabi-v7a arm64-v8a x86 x86_64 riscv64
 APP_CFLAGS       := -Wall -Oz -fomit-frame-pointer
 APP_CPPFLAGS     := -std=c++23
 APP_STL          := none

native/src/Cargo.toml

@@ -63,6 +63,6 @@ panic = "abort"
 
 [profile.release]
 opt-level = "z"
-lto = true
+lto = "fat"
 codegen-units = 1
 panic = "abort"