The comment says that `.derive_debug` was needed as
a workaround for https://github.com/rust-lang/rust-bindgen/issues/2083.
This issue is now closed, and aya-tool compiles without derive_debug.
Additionally, update bindgen dependency to 1.64.
Signed-off-by: Dmitry Savintsev <dsavints@gmail.com>
Aya::obj depends on bindgen generated files, and we start
by migrating bindgen generated files.
This commit adds the new aya-obj crate to the workplace
and migrates generated files into the crate. We use core
instead of std in an effort to make the final crate no_std.
Bindgen was run against libbpf v1.0.1.
Refs: #473