Add wip android/ios lib builds

Cargo.toml

@@ -27,3 +27,17 @@ cbc = { version = "0.1.2", features = ["alloc"] }
 aes = "0.8.4"
 pem = "3.0.6"
 ureq = "3.1.4"
+include_dir = { version = "0.7.4", optional = true }
+
+[target.aarch64-linux-android.dependencies]
+jni = { version = "0.21.1", features = ["invocation", "default"] }
+
+[build-dependencies]
+cc = "1.0"
+
+[features]
+library = ["dep:include_dir"]
+
+#[lib]
+#crate-type = ["cdylib"]
+#required-features = ["library"]