[FEATURE] Implement detach

[Officeyutong]

We need to support the reverse of attaching, detaching

• Able to un-inject agent from the injected process, and revert any hooks we attached
• Able to control the detaching of another process in the current process (e.g through signal)

Related issue:

• https://github.com/eunomia-bpf/bpftime/issues/178
• https://github.com/eunomia-bpf/bpftime/issues/166
• https://github.com/eunomia-bpf/bpftime/issues/168